WBCS Prelims 2013 Question Paper with Answers & Explanations

Explanation

The adjective alarmed is standardly paired with the preposition at or by to indicate the cause of a sudden feeling of fear, anxiety, or worry. When expressing a reaction to a specific event, announcement, or piece of information, such as the news of someone's illness, the preposition at is used to connect the emotional response to its trigger.

Explanation

All of the given word pairs consist of synonyms rather than antonyms. Erroneous and faulty both denote being incorrect or mistaken. Reticent and silent both refer to being reserved or uncommunicative. Vilify and slander both mean to defame or speak maliciously of someone. Since all pairs represent words with similar meanings, none of them are set in opposition.

Explanation

The idiom to see red refers to a state of sudden and extreme anger. This expression is widely believed to be associated with the sport of bullfighting, where a matador waves a red cape to provoke the bull, leading to a common association of the color red with fury, irritation, and uncontrollable rage. When an individual is described as seeing red, it means they have lost their temper and have become mad with anger.

Explanation

The term irruption is derived from the Latin word irrompere, which means to burst in or rush in violently. While eruption denotes a bursting out or outbreak, irruption specifically refers to a sudden, violent breaking or bursting inward, or an invasion.

Explanation

The verb illuminate means to supply or brighten with light. In this context, the past participle illuminated functions as an adjective to describe a street that is properly lit up by streetlights or other sources of light.

Explanation

The word remote is defined as being far away in space or time, or distant from a main center. Consequently, its direct antonym is near, which denotes being close by in distance or time.

Explanation

The phrase good Samaritan refers to a charitable or helpful person who selflessly assists others, especially strangers in distress. This idiom originates from the biblical Parable of the Good Samaritan in the Gospel of Luke, where a Samaritan traveler goes out of his way to care for a beaten and robbed stranger. In modern usage, the term denotes anyone who compassionately and voluntarily helps people in need.

Explanation

The term deciduous is derived from the Latin word decidere, which means to fall off. In botany, deciduous trees are characterized by the seasonal shedding of all their leaves, typically on an annual basis. This phenomenon, known as abscission, is an evolutionary adaptation that helps trees conserve water and reduce energy expenditure during unfavorable environmental periods, such as the cold winter months in temperate regions or the dry season in tropical climates.

Explanation

The word majestic is used to describe something that possesses impressive beauty, scale, or dignity. Since the Taj Mahal is globally renowned for its grand, splendid, and beautiful architecture, majestic is the most contextually and grammatically appropriate adjective to describe its structure in this context.

Explanation

The word insolvent describes a person who is unable to pay their debts or has run out of financial resources to meet their liabilities. In the context of becoming penniless due to a bank failure, declaring oneself insolvent is the legally and contextually appropriate term to indicate financial bankruptcy.

Explanation

The term ill-bred refers to someone who is badly brought up, rude, or lacking in good manners. In the context of the sentence, a child exhibiting extremely impolite, undisciplined, or disrespectful behavior would face severe disciplinary action such as being expelled from school, making this the most appropriate word to describe the child.

Explanation

A philanthropist is defined as a person who loves humanity and seeks to promote the welfare of others. Derived from the Greek roots philein (to love) and anthropos (human or mankind), a philanthropist acts out of benevolence toward all humankind, spreading love and goodwill without making any distinction or difference between individuals.

Explanation

The phrasal verb laugh down means to silence, discourage, or dismiss someone or their ideas by laughing at them in a derisive or mocking manner. This act effectively ridicules and belittles the person, making them feel foolish or insignificant.

Explanation

The idiom crocodile tears refers to an insincere, hypocritical, or false display of grief, sorrow, or emotion. The phrase originates from an ancient myth that crocodiles weep while devouring their prey, thereby symbolizing deceitful and artificial crying where someone feigns sadness or sympathy without actually feeling it.

Explanation

The word transparency denotes the quality of being clear, open, and easy to see through or understand. In both physical and metaphorical contexts, it represents clarity, openness, and the absence of hidden elements. The word haziness refers to a state of being cloudy, indistinct, vague, or lacking in clarity. Because haziness represents a lack of clarity and visibility, it serves as the direct opposite in meaning to transparency.

Explanation

The word lavishly means in a sumptuously rich, elaborate, or luxurious manner. Decorating a banquet hall in a grand and magnificent way perfectly aligns with the context of preparing for a special celebration.

Explanation

The term Gypsy is used to refer to members of the Romani people, a traditionally nomadic ethnic group that originated in northern India and migrated to Europe and other regions over centuries. A defining characteristic of this community is their traditional itinerant lifestyle, choosing not to settle down in a single permanent location, alongside their use of the Romany language, which is an Indo-Aryan language.

Explanation

An insecticide is a chemical substance or preparation formulated specifically to kill or control insects. The term combines insect with the suffix -cide, which is derived from the Latin word caedere, meaning to kill. It is widely used in agriculture, medicine, and industry to manage pest populations and protect crops and public health.

Explanation

The idiom "of one's own accord" is a standard English expression that means voluntarily, of one's own free will, or without being asked or forced.

Explanation

The word queer is an adjective used to describe something that is strange, peculiar, or unusual. When referring to someone's behavior, it indicates that the behavior is out of the ordinary or eccentric, which is the exact definition of the word odd. This makes odd the correct synonym to replace queer in the given context.

Explanation

A chauvinist is defined by an attitude of aggressive, exaggerated, or fanatical patriotism, or a prejudiced belief in the superiority of one's own group, nation, or category over all others. The collective statement "We are superior to everybody else" perfectly encapsulates this mindset of blind loyalty and unwarranted group-level superiority.

Explanation

An anodyne is a drug, medicine, or agent that is capable of relieving pain or soothing distress. In the given context, where a patient requires relief for strained nerves, a painkilling balm serves as the closest synonym because its primary function is to alleviate physical pain and provide a soothing effect.

Explanation

The idiom "a bolt from the blue" refers to a sudden and completely unexpected event or piece of news. The phrase is derived from the imagery of a lightning strike occurring from a clear, cloudless blue sky, symbolizing an occurrence that is entirely unforeseen and surprising.

Explanation

The phrasal verb "go back on" means to fail to keep a promise, agreement, or commitment. Using the past tense "went back on" in the sentence "His friend went back on his word much to his despair" correctly indicates that the friend broke his promise, which logically caused feelings of despair.

Explanation

The term omnivorous is derived from the Latin words omnis, meaning all, and vorare, meaning to devour. An omnivorous creature is an organism that naturally consumes both plant- and animal-based food sources to meet its dietary and energy requirements. This category includes a diverse range of species, such as humans, bears, pigs, and crows, which possess digestive systems capable of processing both types of organic matter.

Explanation

In the 2011 ICC Cricket World Cup final played at the Wankhede Stadium in Mumbai, Mahendra Singh Dhoni was awarded the Man of the Match. Chasing a target of 275 runs against Sri Lanka, Dhoni promoted himself up the batting order and played an exceptional, unbeaten knock of 91 runs off 79 deliveries. His decisive innings included eight boundaries and two sixes, culminating in the iconic match-winning six that secured India's second World Cup title.

Explanation

Sher Shah Suri introduced significant currency reforms during his brief rule from 1540 to 1545. He established a tri-metallic coinage system consisting of gold, silver, and copper. The 'Dam' was the standardized copper coin introduced by him to facilitate day-to-day, small-value transactions for the general public. Alongside the copper Dam, which weighed around 330 grains, he also introduced the silver coin known as the 'Rupiya', which weighed 178 grains and became the precursor to the modern Rupee.

Explanation

West Bengal is the leading rice-producing state in India. It accounts for approximately 15 percent of the total rice produced in the country. The state's fertile alluvial soil, coupled with favorable monsoon rainfall and extensive river systems, supports high-yield rice cultivation across three distinct cropping seasons known as Aman, Aus, and Boro. Aman rice, sown in the rainy season and harvested in winter, contributes the largest portion of the state's total rice yield.

Explanation

According to data from the National Commission for Enterprises in the Unorganised Sector (NCEUS) and the National Sample Survey Office (NSSO), the informal or unorganised sector in India employs approximately 93 percent of the country's total workforce. This vast majority of the labor force is engaged in informal economic activities, including agriculture, construction, casual wage labor, and self-employment in unincorporated proprietary or partnership enterprises.

Explanation

Ghare Baire, translated as The Home and the World and published in 1916, is set against the turbulent backdrop of the 1905 partition of Bengal and the subsequent Swadeshi movement. Through the philosophical conflict between the characters of Nikhilesh, who champions universal humanism and a constructive, inclusive approach, and Sandip, who represents aggressive, manipulative, and extremist nationalism, Rabindranath Tagore presents a profound critique of the Swadeshi movement. The novel highlights how the movement's coercive boycotts of foreign goods disproportionately harmed poor traders and fueled communal tensions, reflecting Tagore's own disillusionment with the aggressive, exclusionary methods of contemporary nationalist politics.

Explanation

Mark Zuckerberg founded Facebook in February 2004 while studying at Harvard University. Originally launched as Thefacebook, the social networking platform was developed alongside his college roommates and fellow students to connect students within the university before expanding globally. Mark Zuckerberg has served as the chief executive officer and leading figure of the company since its inception.

Explanation

The phrase "Sab Lal ho Jayega" (Everything will turn red) is famously attributed to Maharaja Ranjit Singh, reflecting his ambition to expand and consolidate the Sikh Empire. This quote signifies his determination to conquer territories and establish his rule, making option D the correct answer.

Explanation

Pritilata Waddedar was an influential Bengali revolutionary who worked under the leadership of Surya Sen. On September 24, 1932, she led a successful armed attack on the Pahartali European Club in Chittagong, which carried the notorious signboard stating "Dogs and Indians not allowed." Although the raid was successful, Waddedar was cornered and sustained a bullet wound. To prevent herself from being captured by the British police, she chose to consume potassium cyanide and died at the young age of twenty-one.

Explanation

As of April 1, 2013, the total installed petroleum refining capacity in India reached 215.066 million metric tonnes per annum (MMTPA). This capacity was distributed across 22 operational refineries, comprising public sector undertakings, private sector refineries, and joint ventures, establishing India as a major global refining hub.

Explanation

Shinzo Abe became the Prime Minister of Japan on December 26, 2012, and served throughout 2013. Therefore, he was the Prime Minister of Japan in the year the exam was conducted.

Explanation

Let the Cost Price of the article be x.

The difference between selling an article at a loss of 10% and gaining 10% represents a total change of 20% of the Cost Price.

This 20% change corresponds to the Rs. 40 increase in the selling price.

Using the relationship: 20% of x = 40

We can calculate x as: ²⁰⁄₁₀₀ × x = 40

x = (40 × 100)/(20) = 200

Explanation

We decode the expression P - M + N × Q step-by-step using the given definitions:

The expression P - M means P is the brother of M.

The expression M + N means M is the mother of N.

The expression N × Q means N is the sister of Q.

Since N is the sister of Q and M is the mother of N, M is the mother of both N and Q. Because P is the brother of M, P is the maternal uncle of Q.

Explanation

The next train is scheduled to cross the gate at 9:35 A.M. Since a train crosses the gate every 45 minutes, the previous train must have crossed 45 minutes prior:

9:35 A.M. - 45 minutes = 8:50 A.M.

Since the previous train crossed the gate exactly 10 minutes ago, the current time is found by adding 10 minutes to the time of that crossing:

8:50 A.M. + 10 minutes = 9:00 A.M.

Explanation

Bangladesh was established as an independent nation in 1971 following the Bangladesh Liberation War. The conflict arose from political, economic, and linguistic discrimination faced by the people of East Pakistan from the ruling establishment in West Pakistan. The war ended with the signing of the Instrument of Surrender on December 16, 1971, which resulted in the liberation of East Pakistan and the creation of Bangladesh.

Explanation

The controversial Vedanta Aluminium Plant, including the alumina refinery at Lanjigarh and the aluminium smelter at Jharsuguda, is located in Odisha. The refinery and its proposed bauxite mining project in the nearby Niyamgiri Hills of Kalahandi and Rayagada districts faced massive local protests and legal challenges over environmental violations and the displacement of the indigenous Dongria Kondh tribal community.

Explanation

Lord Cornwallis introduced the Sunset Law as an integral part of the Permanent Settlement of Bengal in 1793. Under this regulation, zamindars were required to pay their fixed land revenue to the British treasury by sunset of the specified due date. If a zamindar failed to clear the dues before the sun set on that particular day, their estate was immediately confiscated by the East India Company and auctioned off to recover the arrears.

Explanation

Kharagpur Railway Station, located in the West Midnapore district of West Bengal, India, possessed the world's longest railway platform for a significant period. The platform measures 1072.5 meters in length. Established during the British era under the Bengal Nagpur Railway, this historic station served as a prime hub for rail connectivity in eastern India, setting a global benchmark for station platform length before subsequent yard remodelling projects at other stations surpassed this record.

Explanation

The Tebhaga movement was a major peasant agitation initiated in Bengal by the Bengal Provincial Kisan Sabha, the peasant wing of the Communist Party of India, in 1946. The movement was directed against the exploitative jotedari system. The sharecroppers, known as bargadars or adhiars, demanded that they keep two-thirds of the harvested crop for themselves, reducing the share of the landlords to one-third. They also insisted that the harvested crop be stored in their own godowns rather than in the granaries of the landlords. The agitation intensified during the harvest season of late 1946 and spread across several districts of undivided Bengal.

Explanation

The National Green Tribunal was established on 18 October 2010 under the provisions of the National Green Tribunal Act 2010. It was created for the effective and expeditious disposal of cases relating to environmental protection, conservation of forests, and other natural resources, as well as the enforcement of any legal right relating to the environment. With its establishment, India became the third country in the world, and the first developing nation, to set up a specialized environmental tribunal.

Explanation

The 15th National Census of India, which was the latest population census as of 2013, was conducted in 2011. The Census of India is conducted once every ten years by the Office of the Registrar General and Census Commissioner of India under the Ministry of Home Affairs. This decennial exercise serves as the primary source of demographic data in the country.

Explanation

Lord Dalhousie, who served as the Governor-General of India from 1848 to 1856, introduced the Doctrine of Lapse. Under this annexation policy, any Indian princely state under the direct or indirect control of the British East India Company would be annexed if its ruler died without a natural male heir. The policy rejected the long-standing custom of Indian rulers adopting an heir to succeed them to the throne. Satara was the first state to be annexed under this doctrine in 1848, followed by several others including Sambalpur, Udaipur, Nagpur, and Jhansi.

Explanation

The Higgs boson is an elementary particle in the Standard Model of particle physics. It represents the quantum excitation of the Higgs field, which is responsible for giving mass to other fundamental particles such as quarks and leptons. The particle was first predicted theoretically in 1964 by Peter Higgs and other physicists, and its existence was experimentally confirmed in July 2012 by researchers at CERN using the Large Hadron Collider.

Explanation

The Indo-China War, also known as the Sino-Indian War, began on October 20, 1962, primarily triggered by disputes over the shared Himalayan border. The main areas of conflict were Aksai Chin in the west and the North-East Frontier Agency in the east. The war lasted for about a month, ending on November 21, 1962, when China declared a unilateral ceasefire and withdrew to its pre-war positions.

Explanation

India's coal reserves are predominantly of Gondwana origin, which accounts for over 98% of the country's total coal resources and production. Gondwana coal is mainly bituminous in variety, specifically non-coking bituminous coal, which is characterized by high ash content and low sulfur content. This coal was formed during the Carboniferous to Permian periods and is widely distributed across major Indian river valleys such as the Damodar, Mahanadi, Godavari, and Wardha.

Explanation

The North Atlantic Treaty Organization (NATO) is an intergovernmental military alliance established by the North Atlantic Treaty, also known as the Washington Treaty, signed on 4 April 1949. The headquarters of NATO is located in Brussels, Belgium, which serves as the political and administrative center for its member nations. The headquarters moved to Brussels in 1967 after previously being situated in London and then Paris.

Explanation

By Archimedes' principle, a floating body displaces a volume of liquid whose weight is equal to the weight of the floating body. Let the mass of the ice cube be M and the mass of the trapped air bubble be m. Since the mass of the trapped air is negligible, the total mass of the floating system is approximately M.

The buoyant force F_B supporting the floating ice is equal to the weight of the displaced water: F_B = V_dᵢₛₚₗₐ_cₑ_d · ρ_w · g = M · g V_dᵢₛₚₗₐ_cₑ_d = (M)/(ρ_w)

When the ice melts completely, the air bubble escapes into the atmosphere, and the ice of mass M converts into liquid water of mass M. The volume Vₘₑₗₜ occupied by this melted water is: Vₘₑₗₜ = (M)/(ρ_w)

Since the volume of the melted water is exactly equal to the volume of water originally displaced by the floating ice cube, the water level in the beaker remains unchanged.

Explanation

During the Quit India Movement in 1942, the Tamralipta Jatiya Sarkar established a parallel national government in the Tamluk subdivision of Midnapore, Bengal. As part of this administrative setup, local bodies known as Swaraj Panchayats were established to manage judicial disputes, run civil administration, and coordinate relief and resistance efforts independent of British authority.

Explanation

India operates as a sovereign, socialist, secular, and democratic republic with a parliamentary system of government. The Constitution of India establishes a political framework where power is derived from the citizens through regular, free, and fair elections based on universal adult suffrage. This democratic system ensures representation, accountability of the government to the legislature, and the protection of fundamental rights and individual liberties.

Explanation

The relationship between momentum p, mass m, and kinetic energy K is given by the formula:

p = √(2mK)

When the kinetic energy K is constant, the momentum of a particle is directly proportional to the square root of its mass:

p ∝ √m

The alpha particle, consisting of two protons and two neutrons, has a mass of approximately 4 amu. This is the greatest mass among all the given particles, as an electron has a mass of about 1/1836 amu, a proton has a mass of 1 amu, and a deuteron has a mass of 2 amu. Because the alpha particle has the largest mass, it possesses the maximum momentum for the same kinetic energy.

Explanation

Hurricane Sandy, also known as Superstorm Sandy, struck the East Coast of the United States in late October 2012, just days before the presidential election on November 6, 2012. It was the largest Atlantic hurricane on record by diameter and caused widespread devastation, particularly in New York and New Jersey, leading to a temporary suspension of presidential campaign activities.

Explanation

Dr. Rajendra Prasad was elected as the permanent President of the Constituent Assembly on December 11, 1946. Under his leadership, the assembly successfully drafted the Constitution of India, which was adopted on November 26, 1949. Following the commencement of the Constitution on January 26, 1950, he went on to become the first President of independent India.

Explanation

Boro rice is a winter-spring season crop that is transplanted in December-January and harvested in April-May. Its cultivation is highly dependent on assured irrigation, which is abundantly available in the eastern districts of West Bengal. These fertile alluvial plains possess extensive groundwater resources tapped through shallow tubewells and canal networks, providing the continuous water supply required for this crop. The favorable temperature during the spring and early summer months in this region further facilitates high yields, making the eastern districts the most predominant area for Boro rice cultivation.

Explanation

The unit dyne is the CGS unit of force, and second is the unit of time. According to Newton's second law of motion, force F is defined as the rate of change of momentum p with respect to time t:

F = (dp)/(dt)

Integrating or rearranging this relation gives the change in momentum as:

dp = F · dt

This shows that momentum is equivalent to force multiplied by time. Therefore, the unit of momentum in the CGS system is dyne-second (dyne · sec).

Explanation

In September 2013, the Bank of England announced plans to introduce polymer banknotes to replace traditional cotton-paper currency. Following a successful public consultation process that ended in late 2013, the decision was finalized to transition to plastic notes, starting with the five-pound note featuring Sir Winston Churchill in 2016, followed by the ten-pound note featuring Jane Austen in 2017. Polymer banknotes are cleaner, more secure, and more durable than conventional paper banknotes.

Explanation

The Asiatic Society was founded by the British lawyer and Orientalist Sir William Jones on 15 January 1784 in Calcutta to encourage and initiate research into the history, antiquities, arts, sciences, and literatures of Asia.

Explanation

Captain Mohan Singh founded and commanded the first Indian National Army in September 1942. Disagreements with the Japanese military authorities over the independence and control of the army led to his arrest and the disbanding of the first force in December 1942. When Subhas Chandra Bose arrived in Southeast Asia in July 1943 to revive and reorganise the force as the Azad Hind Fauj, Mohan Singh remained in Japanese custody and was not reinstated. Consequently, he was never a member of the Azad Hind Fauj established under the leadership of Subhas Chandra Bose.

Explanation

A seismograph is an instrument that detects and records the vibrations and ground motion caused by earthquakes, volcanic eruptions, and other seismic sources. When an earthquake occurs, it releases energy in the form of seismic waves that travel through the Earth. The seismograph detects these waves and records them onto a seismogram, which scientists analyze to determine the earthquake's strength, epicenter, and depth.

Explanation

Sir Creek is a 96-km long tidal estuary located in the marshlands of the Rann of Kutch, lying on the border between the Sindh province of Pakistan and the Gujarat state of India. The dispute between India and Pakistan arises from differing interpretations of the boundary line in this water body. Pakistan claims the entire creek based on a 1914 agreement signed between the Government of Sindh and the Rao of Kutch. India contends that the boundary lies mid-channel in accordance with the Thalweg principle of international maritime law, which states that river boundaries between states are divided along the deepest navigable channel of the waterway.

Explanation

The Non-Cooperation Movement was launched by Mahatma Gandhi on September 4, 1920. This mass movement was organized to protest against the Rowlatt Act, the Jallianwala Bagh massacre, and the Khilafat wrongs, aiming to obtain self-governance or Swaraj through non-violent means.

Explanation

The Green Revolution in India was initiated in the mid-1960s, focusing on the introduction of High-Yielding Variety seeds, particularly for wheat, along with modern agricultural techniques, chemical fertilizers, and controlled irrigation. Punjab and Haryana were the first states to adopt these practices because of their pre-existing irrigation infrastructure, flat fertile plains, and high accessibility to water resources, which led to a dramatic increase in crop yields and transformed these regions into the grain bowl of India.

Explanation

The boiling point of a liquid is the temperature at which its vapor pressure equals the surrounding pressure. Connecting the mouth of the flask to an evacuating system removes air and vapor from the vessel, which significantly reduces the pressure inside the flask. Under this reduced external pressure, the vapor pressure of the water can equal the internal pressure at a lower temperature, thereby lowering the boiling point of the water.

Explanation

In April 1947, Huseyn Shaheed Suhrawardy, then the Chief Minister of undivided Bengal, formally launched the proposal for a United Sovereign Bengal. Fearing that the partition of Bengal on religious lines would lead to economic and cultural ruin, Suhrawardy proposed keeping the province undivided as an independent, sovereign state separate from both India and Pakistan.

Alongside Sarat Chandra Bose and Abul Hashim, he drafted a blueprint for this independent state, known as the Suhrawardy-Sarat Bose agreement. The plan aimed to maintain the integrity of the Bengal region through a power-sharing coalition between Hindus and Muslims, preventing the division of the province's resources, particularly the industrialized areas and the key port of Calcutta.

Explanation

Lord Wellesley was the Governor-General of India during the Fourth Anglo-Mysore War in 1799, which marked the final defeat of Tipu Sultan. Under Wellesley's aggressive expansionist policy and the implementation of the Subsidiary Alliance, the British forces besieged and captured Seringapatam, the capital of Mysore. Tipu Sultan died on the battlefield defending his fort on May 4, 1799, which effectively ended the Mysorean resistance and established British hegemony in southern India.

Explanation

The South Asian Association for Regional Cooperation (SAARC) was established in Dhaka on December 8, 1985, with India as one of its founding members. It is a regional intergovernmental organization and geopolitical union of nations in South Asia. India has been an active and full member of SAARC since its inception, contributing to regional cooperation, trade, and economic development in the South Asian subcontinent.

Explanation

Acharya Prafulla Chandra Ray (P. C. Roy) achieved his landmark discovery in 1896 when he prepared a stable, pure form of mercurous nitrite, Hg₂(NO₂)₂. This compound had not been isolated before, and its synthesis opened up a whole line of research into nitrites of metals, earning him international recognition and establishing the foundations of the Indian school of chemistry. Mercurous chloride, mercuric chloride, and mercuric oxide were already long known and are not associated with his original work.

Explanation

The Nobel Peace Prize for 2012 was awarded to the European Union (EU) for its historic role in transforming Europe from a continent of war to a continent of peace. The Norwegian Nobel Committee honored the EU for over six decades of contribution to the advancement of peace and reconciliation, democracy, and human rights in Europe, particularly highlighting its successful efforts in the rebuilding of Europe after World War II and the integration of East and West following the fall of the Berlin Wall.

Explanation

Neel Darpan (The Indigo Planting Mirror) is a historic Bengali play written by Dinabandhu Mitra in 1858–1859, depicting the brutal exploitation of Bengal peasants by British indigo planters during the Indigo Revolt.

The play was translated into English in 1861 by the renowned Bengali poet and playwright Michael Madhusudan Dutta, though the translation was published anonymously under the pseudonym A Native. The publication was arranged and distributed by the Irish missionary Reverend James Long, who was subsequently tried for libel, fined, and sentenced to prison by the British colonial authorities for publishing the work.

Explanation

India Wins Freedom is the autobiographical narrative of Maulana Abul Kalam Azad, a prominent leader of the Indian national movement, scholar, and the first Education Minister of independent India. The book offers a detailed, first-hand account of the partition of India, the complex political negotiations during the freedom struggle, and Azad's personal views on the major national leaders and events of that era.

Explanation

Magnetic shielding is achieved by redirecting external magnetic field lines around the region to be protected. Iron is a ferromagnetic material with exceptionally high magnetic permeability, which offers a path of very low reluctance to magnetic flux. When an instrument is enclosed inside a hollow iron shield, the external magnetic field lines prefer to pass through the high-permeability iron walls rather than the air space inside. This effectively channels the magnetic field away from the interior, leaving the instrument inside shielded and unaffected by the external magnetic field.

Explanation

The services sector has been the largest contributor to India's Gross Domestic Product (GDP) since the post-liberalization era. By the fiscal year 2012–13, the services sector, which includes sub-sectors such as trade, hotels, transport, communication, financial services, real estate, and public administration, accounted for more than 55 percent of India's total GDP, making it the dominant driver of the nation's economic output.

Explanation

The Prarthana Samaj was established on 31 March 1867 in Bombay by Dr. Atmaram Pandurang. It was a highly influential religious and social reform movement in Maharashtra that sought to reform Hindu society from within. Drawing inspiration from the monotheistic principles of the Bhakti movement and the Brahmo Samaj, Dr. Atmaram Pandurang founded the society to propagate the worship of one God and to spearhead crucial social reforms, including the abolition of the caste system, the promotion of women's education, the encouragement of widow remarriage, and the eradication of child marriage.

Explanation

The differences between consecutive terms in the series follow a geometric progression of powers of 2.

The difference between the first two terms is 25 - 24 = 1, which is 2⁰. The difference between the second and third terms is 27 - 25 = 2, which is 2¹.

Following this pattern of 2ⁿ, the difference between the third and fourth terms must be 2² = 4. Adding this to the third term gives:

27 + 4 = 31

This is confirmed by the subsequent differences in the series, where the difference between the fourth and fifth terms is 39 - 31 = 8, which is 2³, and the difference between the fifth and sixth terms is 55 - 39 = 16, which is 2⁴.

Explanation

Bosusco Paolo is an Italian national who worked as a tour operator based in Puri, Odisha. He, along with another tourist from Italy named Claudio Colangelo, was abducted by Maoist rebels in March 2012 while trekking in the forest areas of the Kandhamal district in Odisha. Following negotiations between the state government and mediators, he was released safely in April 2012.

Explanation

Isoclinic lines are lines drawn on a map connecting places on the Earth's surface that have the same magnetic dip or inclination. The angle of dip represents the angle that the Earth's magnetic field lines make with the horizontal plane. This angle varies across the globe, measuring zero degrees at the magnetic equator where the magnetic field is completely horizontal, and ninety degrees at the magnetic poles where the field lines are vertical. Mapping these contours of equal dip angle is essential for geomagnetic studies and navigational calculations.

Explanation

The Bhil revolt against the British East India Company took place in the Khandesh region of present-day Maharashtra. The uprising, which began around 1817-1819, was triggered by the British occupation of their traditional territory, agrarian distress under the new administrative system, and the instigation of Trimbakji Denglia, the minister of Peshwa Baji Rao II. The British used military force to suppress the uprising, though subsequent rebellions by the Bhils in the same region occurred in 1825, 1831, and 1846.

Explanation

The Mahalanobis strategy of Indian planning, formulated by the statistician Prasanta Chandra Mahalanobis for the Second Five Year Plan (1956 to 1961), was designed to build a strong and self-reliant economic foundation. This strategy advocated for massive public sector investments in heavy capital goods industries, such as iron and steel, heavy engineering, chemicals, and machine tools, under the belief that strengthening the capital goods sector was essential for long-term industrialization and rapid economic growth.

Explanation

The series consists of three parts: a first letter, a middle number, and a last letter, each following a distinct pattern.

For the first letter: B has alphabetical position 2. D has alphabetical position 4. F has alphabetical position 6. H has alphabetical position 8. The position increases by 2 each time. The next position is 10, which corresponds to the letter J.

For the middle number: The terms are 2, 6, 14, and 30. The pattern follows the relation xₙ = 2xₙ₋₁ + 2. Substituting the last term: 2 × 30 + 2 = 62

For the last letter: E has alphabetical position 5. H has alphabetical position 8. K has alphabetical position 11. N has alphabetical position 14. The position increases by 3 each time. The next position is 17, which corresponds to the letter Q.

Combining these components yields J62Q.

Explanation

At the 84th Academy Awards ceremony held on February 26, 2012, the Best Picture award was won by the French comedy-drama film The Artist. Directed by Michel Hazanavicius and produced by Thomas Langmann, it achieved historical significance as the first silent film to win the Best Picture Oscar since the inaugural Academy Awards in 1929.

Explanation

Calcium is an essential mineral required by the human body for building and maintaining strong bones and teeth, regulating muscle contractions, and assisting in blood clotting and nerve signaling. Its presence in drinking water in the form of calcium ions, Ca²⁺, contributes to the daily dietary intake of this vital nutrient, which helps prevent health issues like osteoporosis and cardiovascular diseases.

Explanation

Chakravorty Rajagopalachari, popularly known as Rajaji, served as the last Governor-General of India from 21 June 1948 to 26 January 1950. He was also the only Indian national to hold this post. Upon the commencement of the Constitution of India on 26 January 1950, the office of the Governor-General was permanently abolished and succeeded by the President of India.

Explanation

Article 24 of the Constitution of India explicitly prohibits the employment of children below the age of 14 years in any factory, mine, or other hazardous employment. This fundamental right aims to protect children from economic exploitation and physical danger, ensuring their well-being and development. This constitutional mandate is further strengthened by the Child Labour (Prohibition and Regulation) Act, 1986, and aligns with the Right to Education under Article 21A, which guarantees free and compulsory education for all children between the ages of 6 and 14 years.

Explanation

Let the larger number be x and the smaller number be y. The given conditions are: x - y = 15 √x - √y = 1

Using the algebraic identity a² - b² = (a - b)(a + b), the difference of the two numbers can be expressed as: x - y = (√x - √y)(√x + √y)

Substituting the given values: 15 = 1 · (√x + √y) √x + √y = 15

Now, solving the system of equations: √x + √y = 15 √x - √y = 1

Subtracting the second equation from the first: 2√y = 14 √y = 7

Squaring both sides yields the smaller number: y = 49

Explanation

Haji Shariatullah founded the Faraizi movement in Bengal, which was a significant socio-religious reform movement aimed at purifying Islam and compelling Muslims to observe their fundamental duties (faraiz). This movement fits the description of a 'Tariqa' (path or reformist movement) directly within Bengal. While Titu Mir led a movement influenced by Syed Ahmed Barelvi's pan-Indian Tariqa-i Muhammadiyah, Haji Shariatullah is the most direct answer for the leader of a Tariqa movement in Bengal.

Explanation

Haemoglobin is a complex protein found in red blood cells that is responsible for transporting oxygen throughout the body. At the center of each of the four polypeptide chains in a haemoglobin molecule is a prosthetic heme group. Each heme group contains a central iron ion in the ferrous state, represented as Fe⁺⁺. This iron ion is capable of binding reversibly with one molecule of oxygen, enabling the transport of oxygen from the lungs to the tissues.

Explanation

Jute is a major commercial cash crop that requires a hot and humid climate, high annual rainfall of about 150 cm to 250 cm, and fertile alluvial soil. These ideal geographical conditions are predominantly found in the deltaic plains of the Ganga-Brahmaputra region. West Bengal is the leading producer of jute in India, accounting for the vast majority of the country's total jute cultivation and production due to its fertile soil, high rainfall, and abundant water resources necessary for the retting process.

Explanation

The Dharwar Rock System, representing some of the oldest metamorphosed sedimentary and crystalline rocks in India dating back to the late Archaean and early Proterozoic eras, is highly developed in the Chotonagpur Plateau. These rocks were formed from the accumulation of sediments derived from the erosion of the ancient Archaean basement. The Chotonagpur Granite Gneiss Complex is a prime representation of this geological age, featuring highly deformed, foliated, and recrystallized granites, gneisses, and schists that are rich in valuable metallic minerals.

Explanation

The Indian Independence Act of 1947, passed by the Parliament of the United Kingdom, partitioned British India into two new independent dominions of India and Pakistan. This act came into effect on 15th August 1947, marking the official end of British colonial rule and the birth of India as a politically sovereign nation, with Jawaharlal Nehru swearing in as its first Prime Minister.

Explanation

The coding is based on a direct letter-to-letter substitution pattern established by comparing the letters in the given words.

From MUSIC coded as XVQYW and USAGE coded as VQZJF, we get the following unique letter mappings: M corresponds to X U corresponds to V S corresponds to Q I corresponds to Y C corresponds to W A corresponds to Z G corresponds to J E corresponds to F

Applying these exact substitutions to the word CAUSE: C is replaced by W A is replaced by Z U is replaced by V S is replaced by Q E is replaced by F

This gives the coded word WZVQF.

Explanation

During the devastating fire at the AMRI Hospital in Dhakuria, Kolkata, on December 9, 2011, the vast majority of the victims died of asphyxiation (suffocation) rather than direct burn injuries. The fire originated in the basement, where highly combustible materials like plastic pipes, mattresses, and chemicals underwent incomplete combustion. This process generated a dense, toxic smoke rich in carbon monoxide.

Since the hospital was centrally air-conditioned, the toxic smoke traveled rapidly through the AC ducting system to the upper-floor patient wards. The building’s fully sealed glass facade left no ventilation channels for the gas to escape. Patients in critical care, who were unable to evacuate, inhaled the accumulated carbon monoxide. Carbon monoxide binds with hemoglobin in the blood with much higher affinity than oxygen, forming carboxyhemoglobin and leading to rapid, fatal asphyxiation.

Explanation

In the Venezuelan presidential election held on October 7, 2012, Hugo Chávez secured another term in office by winning the election with approximately 55 percent of the vote. This victory allowed him to continue his presidency, which he had held since 1999.

Explanation

Loktak Lake is the largest freshwater lake in Northeast India, famous for the phumdis floating over it, which are heterogeneous masses of vegetation, soil, and organic matter at various stages of decomposition. The lake is home to the Keibul Lamjao National Park, which is the only floating national park in the world and the last natural refuge of the endangered Sangai (brow-antlered deer), the state animal of Manipur. It is situated in the Bishnupur district of Manipur and is designated as a wetland of international importance under the Ramsar Convention.

Explanation

In 1832, the British East India Company demarcated a large area of land in the Rajmahal hills (located in present-day Jharkhand) as Damin-i-Koh, which literally translates to the skirts of the hills. This region was officially designated as the land of the Santhals, who were encouraged by the British to settle in the area, clear the dense forests, and practice settled plough agriculture to generate steady land revenue.

Explanation

According to the Suresh Tendulkar Committee, which was appointed by the Planning Commission of India, the national poverty ratio in India was estimated at 37.2% for the year 2004–05. Around the same time, the World Bank and the United Nations Development Programme (UNDP) estimated that 41.6% of India's population lived below the international poverty line of $1.25 a day. These standard estimates represent the proportion of poor in India as approximately 40% during this period.

Explanation

Muriatic acid is the historical and industrial name for hydrochloric acid (HCl). The name is derived from the Latin word "muria", meaning brine or salt water, indicating its origin from common salt. In household and commercial settings, it is sold as a diluted form of hydrochloric acid and is widely used for heavy-duty cleaning applications, such as removing mineral deposits, etching concrete, cleaning brickwork, and adjusting the pH of swimming pool water.

Explanation

The Gondwana rock system is highly renowned for its extensive coal deposits, holding approximately 98% of India's total coal reserves. These coal-bearing strata were formed during the Carboniferous to Permian periods, around 250 million years ago, when lush vegetation in subsided basins was buried under thick sediment layers and converted into high-quality bituminous coal through heat and pressure over geological eras. Major coalfields such as Raniganj, Jharia, Bokaro, and Singrauli are situated within these Gondwana basins, primarily distributed along the river valleys of the Damodar, Mahanadi, Godavari, and Wardha.

Explanation

Manish types at a rate of 500 / 10 = 50 words per minute, and Rana types at a rate of 400 / 10 = 40 words per minute.

When working together, their combined typing speed is the sum of their individual speeds: 50 + 40 = 90 words per minute.

To type a total of 3600 words, the time required is: ³⁶⁰⁰⁄₉₀ = 40 minutes.

Explanation

The sequence follows a pattern where each term is obtained by adding the sum of its digits to the term itself. This can be expressed by the relation aₙ₊₁ = aₙ + S(aₙ), where S(aₙ) represents the sum of the digits of aₙ.

Applying this rule to each step: For 46, the sum of digits is 4 + 6 = 10, which gives 46 + 10 = 56. For 56, the sum of digits is 5 + 6 = 11, which gives 56 + 11 = 67. For 67, the sum of digits is 6 + 7 = 13, which gives 67 + 13 = 80. For 80, the sum of digits is 8 + 0 = 8, which gives the missing term as 80 + 8 = 88. For 88, the sum of digits is 8 + 8 = 16, which yields the final term 88 + 16 = 104.

Explanation

Convertibility of a currency refers to the freedom of converting domestic currency into foreign currencies and vice-versa at market-determined exchange rates. In India, the rupee has been fully convertible on the current account since August 1994, when India accepted the obligations of Article VIII of the International Monetary Fund (IMF) Articles of Agreement. Current account convertibility allows businesses and individuals to freely convert rupees for transactions related to trade in goods and services, travel, education, medical expenses, and inward or outward remittances. In contrast, the capital account is only partially convertible, meaning that restrictions still apply to international capital transfers, investments, and external borrowings.

Explanation

Phenyl (commonly used as a disinfectant and cleaning agent in household work) chemically refers to phenol-based formulations. Phenol (C₆H₅OH) is a monosubstituted hydroxyl derivative of benzene (C₆H₆). Similarly, the phenyl functional group (C₆H₅) is formed by removing a single hydrogen atom from a benzene ring. Thus, it is chemically derived from benzene.

Explanation

The Great Bath is one of the most famous public structures of the ancient Indus Valley Civilization, discovered at the archaeological site of Mohenjo-daro in Sindh, Pakistan. It is a large, rectangular stepped tank made of finely fitted bricks, set in gypsum mortar, and lined with a layer of natural bitumen to make it watertight. Scholars believe that the Great Bath was used for special public baths or religious cleansing rituals, indicating the high importance of cleanliness and ritual purity in the Harappan culture.

Explanation

The first jute mill in India was established in Rishra, near Kolkata, in 1855 by George Auckland. Among the given options, 1850 is the closest year to the actual establishment date of 1855.

Explanation

The Hindu Widows Remarriage Act, officially known as Act XV of 1856, was passed on 26 July 1856. This landmark social reform legislation legalized the remarriage of Hindu widows and secured the legitimacy of their children. The enactment of this law was the culmination of a persistent campaign led by the prominent social reformer Ishwar Chandra Vidyasagar, who cited ancient Hindu scriptures to demonstrate that widow remarriage was permissible. The Act was drafted during the tenure of Governor-General Lord Dalhousie and was formally passed by his successor, Lord Canning, in 1856.

Explanation

During the Lahore Session of the All-India Muslim League held in March 1940, the historic Lahore Resolution was passed. In his presidential address at this session, Muhammad Ali Jinnah formally articulated the Two-Nation Theory, declaring that Hindus and Muslims belong to two different civilisations and social systems, and therefore Muslims constitute a distinct nation. This session marked the formal demand for the creation of independent sovereign states for Muslims in the northwestern and eastern zones of India.

Explanation

Forestation plays a critical role in maintaining ecological balance and environmental stability. Tree roots bind the soil firmly, which prevents the topsoil from being washed or blown away, thereby controlling soil erosion. Additionally, forests act as natural carbon sinks by absorbing carbon dioxide and trapping particulate matter, which helps mitigate air pollution. Trees and forest litter also slow down the surface runoff of rainwater and enhance the water infiltration capacity of the soil, which regulates river discharge and effectively prevents floods.

Explanation

The Jhelum River is the primary river flowing through the Vale of Kashmir. It originates from the Verinag Spring, situated at the foothills of the Pir Panjal range in the southeastern part of the valley. The river flows in a north-westerly direction through Srinagar and passes through the Wular Lake, which is one of the largest freshwater lakes in Asia, before entering a deep gorge near Baramulla on its way to Pakistan. The Jhelum acts as the hydrological backbone of the Kashmir Valley, supporting agriculture, navigation, and local livelihoods.

Explanation

The Aihole inscription is a famous eulogy or prasasti composed by Ravikirti, who was the court poet of the Chalukya king Pulakeshin II. Written in Sanskrit using the old Kannada script in 634 AD, this historical inscription is found at the Meguti Jain temple in Aihole, Karnataka. It provides a detailed account of the reign and military campaigns of Pulakeshin II, specifically highlighting his historic victory over Emperor Harshavardhana of Kanauj on the banks of the Narmada River, which successfully checked Harsha's southern expansion.

Explanation

Under the provisions of the West Bengal Panchayat Act, 1973, Panchayati Raj Institutions across different levels are vested with the power to levy and collect specific local taxes, tolls, rates, and fees to generate their own source of revenue. Specifically, they are authorized to collect toll taxes on persons, vehicles, or animals at toll-bars established on roads or bridges under their control or management. Additionally, they are empowered to levy and collect water rates or water taxes within their jurisdiction where arrangements for the supply of water for drinking, irrigation, or any other domestic or agricultural purpose have been made by the panchayat authority.

Explanation

Triple fusion in angiosperms involves the fusion of one haploid male gamete with the diploid secondary nucleus, which is formed by the fusion of two polar nuclei in the central cell of the embryo sac. This fusion produces a triploid (3n) nucleus known as the primary endosperm nucleus (PEN). The PEN undergoes subsequent mitotic divisions and cellularization to develop into the triploid endosperm, a nutrient-rich tissue that supports and nourishes the developing embryo.

Explanation

The Charter Act of 1813 allowed Christian missionaries to travel to India to propagate their religion and promote moral and religious improvements. This Act officially permitted missionary groups to enter the country under a licensing system overseen by the Court of Directors of the East India Company or the Board of Control, marking a significant shift in British policy towards religious activities in India.

Explanation

By comparing the letters of the given words with their corresponding numerical codes, we can establish a direct letter-to-digit mapping:

In RESCUE = 372057: R is coded as 3 E is coded as 7 S is coded as 2 C is coded as 0 U is coded as 5 E is coded as 7

In PROBLEM = 9348176: P is coded as 9 R is coded as 3 O is coded as 4 B is coded as 8 L is coded as 1 E is coded as 7 M is coded as 6

Using these direct letter-to-digit matches, we can find the code for PROCURE: P = 9 R = 3 O = 4 C = 0 U = 5 R = 3 E = 7

This yields the number 9340537.

Explanation

Gautama Buddha, the founder of Buddhism, was born as Siddhartha Gautama in 563 B.C. in the sacred area of Lumbini, which is located in modern-day Nepal. He was born into the royal family of the Shakya clan of Kapilavastu. He attained enlightenment in Bodh Gaya, delivered his first sermon at Sarnath, and attained Mahaparinirvana in 483 B.C. at Kushinagar.

Explanation

The Narmada River, one of the major west-flowing rivers of peninsular India, originates from the Narmada Kund located on the Amarkantak Plateau in the Anuppur district of Madhya Pradesh. This plateau is a significant geographic feature where the Vindhya and Satpura ranges meet, serving as the source of major rivers including the Narmada, Son, and Johila.

Explanation

The National Rural Employment Guarantee Act, later renamed the Mahatma Gandhi National Rural Employment Guarantee Act, was enacted in 2005 to enhance livelihood security in rural areas. It legally guarantees at least 100 days of wage employment in a financial year to every rural household whose adult members volunteer to do unskilled manual work.

Explanation

Endemic plants are species that are unique to a defined geographical location, such as a specific island, mountain range, country, or other defined zone, and are not found naturally anywhere else in the world. Their survival and distribution are constrained by specific ecological, climatic, or physical barriers that prevent them from spreading beyond these restricted habitats. Because of their limited distribution, endemic plants are often highly vulnerable to habitat disturbance and extinction.

Explanation

Abanindranath Tagore painted the iconic image of Bharat Mata in 1905 during the Swadeshi movement. The painting depicts a saffron-clad woman, styled like a sadhvi, holding a book, sheaves of paddy, a piece of white cloth, and a garland in her four hands, symbolizing learning, food, clothing, and spiritual salvation for the nation. This depiction played a significant role in inspiring nationalist feelings during the freedom struggle.

Explanation

When a larger cube is cut into N equal smaller cubes, the number of divisions along each edge is given by n = ³√N. Here, N = 64, which gives n = ³√(64) = 4.

The smaller cubes with only one side painted lie at the center of each of the 6 faces of the larger cube. The standard formula to calculate the number of these single-side painted cubes is:

6(n - 2)²

Substituting n = 4 into the formula:

6(4 - 2)² = 6 × 2² = 6 × 4 = 24

Explanation

Tropical cyclones in the Bay of Bengal are highly prevalent during the late monsoon or retreating monsoon season, which primarily occurs from October to November. During this transition period, the southwest monsoon is withdrawing, and the Intertropical Convergence Zone (ITCZ) shifts southward over the bay. The exceptionally warm sea surface temperatures, low vertical wind shear, and abundant moisture in the lower atmosphere over the Bay of Bengal provide the perfect thermodynamic conditions for the formation and rapid intensification of severe cyclonic storms.

Explanation

The biosphere is the global ecological system integrating all living beings and their relationships. It is defined as the zone of life on Earth, representing the narrow interface where the lithosphere, hydrosphere, and atmosphere interact to support living organisms. This sphere contains all forms of life, from microscopic bacteria to large plants and animals.

Explanation

BPL stands for Below Poverty Line, which is an economic benchmark used by the government to identify economically disadvantaged individuals and households who are in need of government aid and subsidies. It is determined using various criteria such as income, consumption expenditure, and socio-economic indicators to help target welfare schemes effectively.

Explanation

During the early Vedic period, the Rigvedic Aryans settled in the region known as Sapta-Sindhu, meaning the land of seven rivers. This geographic territory primarily corresponds to the Punjab region, which includes the Indus River and its five major tributaries along with the ancient Saraswati River. The Rigveda, the oldest of the Vedas, contains numerous hymns describing this region as the initial territory where the Aryans established their first permanent settlements upon entering the Indian subcontinent.

Explanation

To evaluate the expression, we replace the letter codes with their designated mathematical operators:

P represents + R represents × S represents - T represents ÷

Substituting these operators into the given expression 5 R 9 P 7 S 9 T 3 P 6 yields:

5 × 9 + 7 - 9 ÷ 3 + 6

Following the standard order of operations (BODMAS):

First, perform the division: 9 ÷ 3 = 3

Next, perform the multiplication: 5 × 9 = 45

Substitute these results back into the expression: 45 + 7 - 3 + 6

Finally, perform addition and subtraction from left to right: 45 + 7 = 52 52 - 3 = 49 49 + 6 = 55

Explanation

Spraying DDT on crop plants distributes the chemical across multiple environmental compartments. During the spraying process, fine droplets and vapor contaminate the surrounding air. The chemical that lands on the crops and ground accumulates in the soil, where it persists for a long time due to its resistance to biodegradation. Subsequent rainfall, irrigation, and agricultural runoff carry the pesticide residue from the soil and foliage into rivers, streams, and groundwater reservoirs, thereby contaminating water bodies. This widespread dispersion leads to the simultaneous pollution of air, soil, and water ecosystems.

Explanation

Evaluating each square root term individually:

First term: √(625) = 25

Second term: √(6.25) = √(⁶²⁵⁄₁₀₀) = ²⁵⁄₁₀ = 2.5

Third term: √(0.0625) = √(⁶²⁵⁄₁₀₀₀₀) = ²⁵⁄₁₀₀ = 0.25

Adding these three evaluated values together: 25 + 2.5 + 0.25 = 27.75

Using the decimal representation style of the options where a hyphen replaces the decimal point, this is written as 27-75.

Explanation

The Nilgiri Hills, situated at the tri-junction of Tamil Nadu, Karnataka, and Kerala, serve as the geographic meeting point where the Eastern Ghats and the Western Ghats converge. This region forms a high-altitude plateau where the two major mountain ranges of the Indian peninsula connect, with Doddabetta serving as the highest peak in this junction.

Explanation

In coconut (Cocos nucifera), the edible part and the source of oil is the endosperm. The endosperm in a mature coconut is present as a solid white kernel (copra) and a liquid portion (coconut water). Coconut oil is commercially extracted from this dried solid endosperm, which is rich in dietary lipids and fatty acids.

Explanation

Porus, the ruler of the Paurava kingdom located between the Jhelum and Chenab rivers, fought valiantly against Alexander the Great in the famous Battle of the Hydaspes in 326 BC. Despite facing Alexander's highly disciplined Macedonian army, Porus deployed a formidable force, including war elephants, which caused immense difficulties and heavy casualties among the Greek forces. Porus's exceptional bravery, leadership, and refusal to surrender easily earned the profound respect of Alexander, who subsequently reinstated him as a king and even expanded his territories.

Explanation

The Indian polity is federal in nature because it features a dual government system consisting of the Union Government at the Centre and State Governments at the periphery. Power is constitutionally divided between these levels of government through the Union List, State List, and Concurrent List in the Seventh Schedule. Additionally, the Indian Constitution established other essential federal characteristics, including a written constitution, its supremacy, rigidity in constitutional amendment procedures, an independent judiciary to resolve disputes, and a bicameral legislature. While it possesses strong unitary characteristics and is often referred to as quasi-federal, its fundamental constitutional structure is built upon federal principles.

Explanation

The Raidak River, also known as the Wang Chhu in Bhutan, is a major trans-boundary river flowing through Bhutan, India, and Bangladesh. It originates in the Himalayas and enters the plains of India in the Alipurduar and Cooch Behar districts of West Bengal. The spatial arrangement of North Bengal rivers progresses from west to east starting with the Mechi, followed by the Mahananda, Teesta, Jaldhaka, Torsa, and finally the Raidak River. This makes it the easternmost river flowing through the plains of North Bengal, where it acts as a critical tributary of the Brahmaputra river basin before crossing into Bangladesh.

Explanation

The first session of the Indian National Congress was held from 28 to 31 December 1885 at Gokuldas Tejpal Sanskrit College in Bombay. It was attended by 72 delegates from different parts of India and was presided over by Womesh Chandra Bonnerjee. The session was originally scheduled to take place in Poona, but had to be shifted to Bombay at the last minute due to an outbreak of cholera in Poona, making Bombay the historic venue where the Congress was officially founded.

Explanation

Almost all mammals possess exactly seven cervical vertebrae in their neck region. This consistent skeletal structure is a highly conserved evolutionary trait across the class Mammalia. It remains constant regardless of the length of the animal neck, meaning that a short-necked human, a tiny mouse, and an extremely long-necked giraffe all have exactly seven cervical vertebrae, with differences only in the size and length of the individual bones.

Explanation

In his various edicts and rock inscriptions, the Mauryan Emperor Ashoka is most commonly referred to by the dual honorific title Devanampriya Priyadarsin. The term Devanampriya translates to beloved of the gods, and Priyadarsin means of pleasing appearance or one who looks on with affection. This composite title reflects the paternalistic and benevolent nature of his kingship, which aimed to establish a welfare state governed by the principles of Dhamma.

Explanation

The surface area of a sphere with radius r is given by the formula A = 4π r² and its volume is given by V = ⁴⁄₃π r³.

According to the given condition, the surface area is 3 times its volume: A = 3V

Substituting the formulas into the equation: 4π r² = 3 × (⁴⁄₃π r³)

Simplifying the expression: 4π r² = 4π r³

Dividing both sides by 4π r² (since r ≠ 0): r = 1 cm

The diameter of the sphere is twice the radius: d = 2r = 2 × 1 = 2 cm

Explanation

The Indian economy is classified as a mixed economy because it features the co-existence of both the public and private sectors. In this system, the private sector is free to operate in many industries under market forces, while the government retains control over key strategic sectors, provides public goods, and implements welfare programs to ensure social justice. This dual setup combines the efficiency of free-market capitalism with the social welfare goals of state-planned socialism.

Explanation

The upper air circulation dominated by jet streams plays a decisive role in controlling the Indian monsoon system. During late spring, the Subtropical Westerly Jet Stream, which flows south of the Himalayas, shifts northward. This sudden northward shift clears the path for the development of a strong low-pressure area over northern India. Simultaneously, the Tropical Easterly Jet Stream establishes itself over the southern peninsula, facilitating the pull of moisture-laden southwest winds from the Indian Ocean. The dynamics of these jet streams thus dictate the onset, progress, and intensity of the monsoon rains across the subcontinent.

Explanation

The order Gymnophiona, also known as Apoda, comprises the caecilians, which are characterized by a complete absence of limbs and girdles. These amphibians have elongated, cylindrical, worm-like bodies with superficial rings or annuli. They are specialized for a fossorial or aquatic lifestyle, featuring a strong, heavily ossified skull for digging, a highly reduced tail, and sensory tentacles on their head to compensate for their poorly developed, skin-covered eyes.

Explanation

The Ghadar Party, alongside Indian revolutionaries like Rash Behari Bose and Sachin Sanyal, was associated with the plan to assassinate the Viceroy of India, Lord Hardinge. This culminated in the Delhi-Lahore Conspiracy Case of 1912 (also known as the Delhi Conspiracy Case), where a bomb was thrown at Lord Hardinge during his official state entry into Delhi on 23 December 1912. The network of revolutionaries involved in this attempt later collaborated extensively with the Ghadar Party in North America to orchestrate the pan-Indian Ghadar Mutiny during World War I.

Explanation

During the hot weather season in April, localized thunderstorms accompanied by high-velocity winds and torrential rains, known as Kalbaishakhi or Nor'westers, are highly frequent in West Bengal. These violent thunder squalls originate over the Chota Nagpur Plateau due to intense solar heating and move eastward, bringing sudden, convective rainfall and sharp temperature drops to West Bengal.

Explanation

The series follows a consistent mathematical pattern based on the alphabetical positions of the letters.

Within each three-letter term, the letters increase progressively by 2: E (5) + 2 = G (7), and G (7) + 2 = I (9) J (10) + 2 = L (12), and L (12) + 2 = N (14) O (15) + 2 = Q (17), and Q (17) + 2 = S (19)

The transition from the last letter of one term to the first letter of the next term increases by 1: I (9) + 1 = J (10) N (14) + 1 = O (15)

Following this logic, the first letter of the missing term must be S (19) + 1 = T (20). Applying the +2 progression within this final term gives T (20), V (22), and X (24).

Explanation

Sultan Mahmud of Ghazni led seventeen plunderous expeditions into northern and western India between 1000 AD and 1027 AD. His primary objective was to acquire the vast wealth stored in Indian temples and cities to finance his empire-building campaigns in Central Asia. Historian Sir Henry Elliot documented these seventeen invasions, which included notable raids on major centers like Thanesar, Mathura, Kannauj, and his most famous campaign against the Somnath Temple in Gujarat in 1025-1026 AD.

Explanation

Keoladeo Ghana National Park, formerly known as the Bharatpur Bird Sanctuary, is a world-renowned avifauna sanctuary located in Bharatpur, Rajasthan. It serves as a major wintering area for thousands of rare and highly endangered migratory birds, such as the Siberian Crane, and hosts over 350 species of resident and migratory birds. Recognizing its ecological significance and exceptionally rich bird diversity, it was declared a protected sanctuary in 1971 and was designated as a UNESCO World Heritage Site in 1985.

Explanation

The Planning Commission of India was established on 15 March 1950 through an executive resolution of the Government of India. Because it was not created by the Constitution nor by an Act of Parliament, it was classified as a non-constitutional and non-statutory body. It functioned as an advisory organ under the Union Government, essentially operating as a specialized department of the Central Government to formulate India's Five-Year Plans.

Explanation

The Hindu College in Calcutta was established on January 20, 1817, by a group of reformists and visionaries including Raja Ram Mohan Roy, David Hare, Radhakanta Deb, and Sir Edward Hyde East. The primary objective of this institution was to provide systematic instruction in European literature and science to the youth of Bengal. It represents one of the earliest institutions of modern higher education in Asia and was subsequently renamed Presidency College in 1855 before becoming Presidency University in 2010.

Explanation

India is the seventh-largest country in the world by land area, covering approximately 3.28 million square kilometers. This geographic area accounts for about 2.4 percent of the Earth's total land surface. The six countries that are larger than India in terms of area are Russia, Canada, China, the United States, Brazil, and Australia.

Explanation

The pancreas is a primary organ responsible for the synthesis and secretion of amylase, specifically pancreatic amylase. This digestive enzyme is produced by the exocrine acinar cells of the pancreas and released into the small intestine through the pancreatic duct. In the duodenum, pancreatic amylase plays a crucial role in carbohydrate digestion by hydrolyzing dietary starches and glycogen into simpler sugars such as maltose, maltotriose, and dextrins.

Explanation

Ballal Sen, who ruled the Sena dynasty of Bengal during the twelfth century, introduced the Kaulinya system (also known as Kulinism) to reorganize and reform the social structure of Bengal. Under this system, he bestowed the elite title of Kulina upon selected families of Brahmins, Vaidyas, and Kayasthas who exhibited high spiritual, intellectual, and moral qualities. This was aimed at establishing a rigid caste hierarchy and promoting orthodox Vedic customs and ritual purity in the region.

Explanation

The given relationships can be represented as mathematical inequalities. From the statement that A is taller than B, we have A > B. From the statement that C is taller than D, we have C > D. The statement that B is not shorter than C means B is either taller than or equal to C, which is written as B ≥ C. Combining these relations gives the sequence A > B ≥ C > D, which shows that A is taller than everyone else.

Explanation

Gopal Krishna Gokhale, a prominent leader of the Indian National Congress and a social reformer, made the famous statement "What Bengal thinks today, India thinks tomorrow." He said this in appreciation of Bengal's pioneering role in the socio-religious, political, and intellectual awakening of India during the late nineteenth and early twentieth centuries, particularly during the period of the Bengal Renaissance and the anti-partition movement of 1905. At that time, Bengal was the nerve center of Indian nationalism, education, literature, and political thought, leading the rest of the country in progressive ideas and nationalist mobilization.

Explanation

The diaphragm is a specialized muscular partition separating the thoracic cavity from the abdominal cavity, which is a defining anatomical feature of mammals, including bats. Birds lack a true muscular diaphragm to assist in respiration. Instead, avian respiration relies on a unique system of air sacs and the movement of the sternum and rib cage to pump air through their rigid lungs. This absence of a muscular diaphragm in birds is a major structural difference between the avian and mammalian respiratory systems.

Explanation

The mathematical pattern followed in the given equations is represented by the formula A + B = A × (B)/(2).

For the first relation, we have 16 × ²⁄₂ = 16.

For the second relation, we have 20 × ⁴⁄₂ = 40.

For the third relation, we have 24 × ⁸⁄₂ = 96.

Applying the same logic to the final expression, we obtain 15 × ⁶⁄₂ = 15 × 3 = 45.

Explanation

The work for a centralized railway workshop at Kharagpur to carry out major repairs of broad-gauge rolling stock was sanctioned in 1900, and its construction was completed in 1904.

Explanation

Chandragupta II, who ruled the Gupta Empire from approximately 375 to 415 CE, adopted the famous title Vikramaditya, which translates to the Sun of Valour. He assumed this title to commemorate his major military triumph over the Western Kshatrapas, which led to the annexation of the prosperous regions of Malwa, Gujarat, and Saurashtra. His reign marked the peak of the Gupta golden age, celebrated for prosperous administration, territorial expansion, and immense cultural and literary achievements under his patronage.

Explanation

The respiratory organs of the prawn are enclosed in a gill chamber located on each lateral side of the cephalothorax. The outer wall of this chamber is covered by a large, plate-like lateral extension of the carapace. This portion of the carapace that functions as a gill cover is known as the branchiostegite. The inner lining of the branchiostegite is highly vascularized, which allows it to participate directly in gaseous exchange during respiration.

Explanation

Under Article 202 of the Constitution of India, the Governor of a State is required to cause to be laid before the House or Houses of the Legislature of the State the Annual Financial Statement, commonly known as the State Budget, for each financial year. The State Legislature has the constitutional authority to discuss, vote upon the demands for grants, and pass the Appropriation Bill and the Finance Bill, which authorize the state government to withdraw funds and spend from the Consolidated Fund of the State.

Explanation

During the Lahore Session of the Indian National Congress in December 1929, under the presidency of Jawaharlal Nehru, the historic resolution of Purna Swaraj or complete independence was passed. This resolution declared that the ultimate goal of the Indian national movement was total independence from British rule, transitioning from the earlier demand for dominion status. Following this declaration, the Indian national flag was hoisted on the banks of the Ravi River on December 31, 1929, and January 26, 1930, was designated to be celebrated as the first Independence Day.

Explanation

Gujarat is the leading cotton-producing state in India. During the 2012-13 cotton season, the state recorded the highest output of cotton in the country, thanks to its extensive cultivation area, favorable climate, and the widespread adoption of high-yielding Bt cotton varieties. The black cotton soil found in the Saurashtra and Kathiawar regions of Gujarat is highly fertile and holds moisture well, making it exceptionally well-suited for cotton cultivation.

Explanation

Justice Altamas Kabir served as the Chief Justice of India from September 29, 2012, to July 18, 2013. Since the exam year is 2013, he would have been the present Chief Justice for a significant portion of that year, particularly in the first half.

Explanation

In 712 AD, the young Umayyad general Muhammad-bin-Qasim led a military expedition to the Indian subcontinent and successfully conquered Sind. He defeated Raja Dahir, the ruling king of the Chach dynasty of Sind, at the Battle of Aror, establishing the first Muslim rule in the region.

Explanation

Expressing 112 as a product of its prime factors gives:

112 = 2⁴ × 7¹

For a number to be a perfect square, the exponent of each prime factor in its prime factorization must be an even number. In the prime factorization of 112, the exponent of 2 is 4 (which is even), but the exponent of 7 is 1 (which is odd). Multiplying by 7 provides the missing factor to make the exponent of 7 even:

112 × 7 = 2⁴ × 7² = (2² × 7)² = 28² = 784

Explanation

Under Article 54 of the Indian Constitution, the President is elected by an electoral college. This electoral college consists of the elected members of both Houses of Parliament (the Lok Sabha and the Rajya Sabha) alongside the elected members of the Legislative Assemblies (Vidhan Sabhas) of all the States, including the Union Territories of Delhi and Puducherry.

Explanation

The 98th Indian Science Congress was hosted by SRM University in Chennai from January 3 to January 7, 2011. The focal theme of this session was Quality Education and Excellence in Scientific Research in Indian Universities, and it was inaugurated by then Prime Minister Dr. Manmohan Singh.

Explanation

Uttar Pradesh is the largest producer of sugarcane in India. The state benefits from the highly fertile alluvial soil of the Indo-Gangetic plain, along with extensive canal and tubewell irrigation networks fed by major rivers like the Ganga and Yamuna. It also has a favorable subtropical climate with adequate rainfall that supports the long growth cycle of the crop. These combined natural and infrastructural advantages allow Uttar Pradesh to dedicate the largest land area to sugarcane cultivation in the country, consistently leading nationwide production by contributing more than one-third of India's total annual sugarcane yield.

Explanation

Qutb-ud-din Aibak founded the Slave Dynasty, also known as the Mamluk Dynasty, in 1206 AD. He was originally a Turkish slave who rose to become a trusted general of the Ghurid ruler Muhammad Ghori. Following Ghori's assassination in 1206 AD, Aibak declared independence and established his rule over the Ghurid territories in northern India, marking the beginning of the Delhi Sultanate.

Explanation

The total area of the new square lamina is equal to the sum of the areas of the three individual square laminae.

The area of a square with side length s is given by the formula: Area = s²

For the three given squares, the individual areas are: Area of the first square = 2² = 4 square cm Area of the second square = 3² = 9 square cm Area of the third square = 6² = 36 square cm

Summing these individual areas gives the area of the new square lamina: Total Area = 4 + 9 + 36 = 49 square cm

The side length of the new square lamina is the square root of its total area: Side = √(49) = 7 cm

Explanation

Under Article 61 of the Constitution of India, the President can be removed from office before the expiry of their term through the process of impeachment for the violation of the Constitution. This quasi-judicial procedure can be initiated by either House of Parliament. The charges must be signed by at least one-fourth of the members of the House framing the charges, and a 14 days' notice must be given to the President. After the resolution is passed by a majority of not less than two-thirds of the total membership of the initiating House, it is sent to the other House, which investigates the charges. If the investigating House also passes the resolution by a majority of not less than two-thirds of its total membership, the President stands removed from office.

Explanation

During the severe balance of payments crisis in 1991, India's foreign exchange reserves plummeted to levels barely sufficient to finance three weeks of essential imports. To avert a default on its international debt obligations, India secured an emergency financial bailout from the International Monetary Fund (IMF). The IMF granted this assistance under strict conditionalities, requiring India to implement a comprehensive Structural Adjustment Programme. These structural adjustment policies mandated systemic macroeconomic reforms, which led to the dismantling of the Licence Raj, liberalization of trade, deregulation of key industrial sectors, reduction of import tariffs, and the promotion of foreign direct investment. This fundamental shift transformed India's economic landscape from a state-dominated, closed economy to a market-oriented, globalized model.

Explanation

According to the Census of India 2011, West Bengal has a population of 91,276,115 out of India's total population of 1,210,854,977. This gives West Bengal a share of approximately 7.54% to 7.55% of the total population of India, ranking it as the fourth most populous state in the country.

Explanation

The Nehru Report of 1928, drafted by a committee chaired by Motilal Nehru, was the first major attempt by Indians to draft a constitution for their country. Prepared in response to the challenge by the British Secretary of State, Lord Birkenhead, the report proposed a federal structure for India. It envisioned a constitutional arrangement where the British Indian provinces and the princely states would unite into a single federation under a dominion status, with a responsible government at both the central and provincial levels.

Explanation

The Supreme Court of India acts as the guardian and the final interpreter of the Constitution of India. Under the constitutional framework, the Supreme Court holds the ultimate authority to interpret and expound constitutional provisions, safeguard fundamental rights, and exercise the power of judicial review to ensure that all legislative enactments and executive actions conform to the spirit of the Constitution. Any interpretation of the constitutional text delivered by the Supreme Court is binding on all courts and administrative bodies across the nation.

Explanation

Jalaluddin Mangabarni, also known as Jalal ad-Din Mingburnu, was the last ruler of the Khwarazmian Empire, which was centered in the region of Khwarizm (also historically associated with Khiva). Following the devastating Mongol invasion of his empire by Genghis Khan, Jalaluddin fled towards India in 1221. He sought asylum and an alliance from Shams-ud-din Iltutmish, the Sultan of Delhi. Politically astute, Iltutmish declined the request to avoid provoking Genghis Khan, thereby successfully shielding the fledgling Delhi Sultanate from a direct Mongol invasion.

Explanation

Dr. B.R. Ambedkar publicly burned the Manusmriti on December 25, 1927, during the Mahad Satyagraha. He targeted this ancient text because he held it responsible for codifying caste-based discrimination, social inequality, and the subjugation of women in Hindu society. This symbolic act of protest is celebrated annually as Manusmriti Dahan Diwas.

Explanation

Let the two numbers be 7x and 9x. The difference between the numbers is given as 6.

9x - 7x = 6

2x = 6

x = 3

Substituting the value of x back, the numbers are 7 × 3 = 21 and 9 × 3 = 27.

Explanation

Freedom of speech and expression is a Fundamental Right guaranteed to all citizens of India under Article 19(1)(a) of the Constitution. Located within Part III of the Constitution, which contains the fundamental rights of citizens, this provision is critical for a democratic society as it allows individuals to freely express their thoughts, views, beliefs, and convictions through speech, writing, print, or other media. This right is subject to reasonable restrictions under Article 19(2) on grounds such as the sovereignty and integrity of India, security of the State, public order, decency, and morality.

Explanation

Daulat Khan Lodi, who served as the governor of Punjab during the reign of the Delhi Sultan Ibrahim Lodi, grew deeply discontented with the Sultan's tyrannical policies and centralizing authority. Fearing for his own position and power, Daulat Khan Lodi sent his son Dilawar Khan to Kabul to invite Babur to invade India and help overthrow Ibrahim Lodi. This invitation played a crucial role in bringing Babur to India, culminating in the First Battle of Panipat in 1526 and the foundation of the Mughal Empire.

Explanation

On September 19, 2012, India successfully test-fired its nuclear-capable, surface-to-surface ballistic missile Agni-IV from Launch Complex-4 of the Integrated Test Range at Wheeler Island (now known as Dr. Abdul Kalam Island) off the coast of Odisha. The two-stage, solid-propelled intermediate-range ballistic missile has a strike range of approximately 4,000 kilometres. It is equipped with advanced avionics, a high-performance onboard computer, and state-of-the-art ring laser gyro-based inertial navigation systems to correct in-flight disturbances with high precision.