MPSC Prelims 2015 General Studies Paper I with Answers & Explanations

Explanation

Narayan Rao Pawar was a revolutionary freedom fighter and an active member of the Arya Samaj who sought to end the autocratic rule of the last Nizam of Hyderabad, Mir Osman Ali Khan. On 4th December 1947, Pawar, along with his associates Jagadish Arya and Gandaiah Arya, plotted to assassinate the Nizam by throwing a bomb at his convoy near the King Kothi Palace in Hyderabad.

Although the Nizam survived the attack, Pawar was captured on the spot and subsequently sentenced to death by the sessions court. Following the military intervention by the Indian government in September 1948, known as Operation Polo, his death sentence was commuted and he was subsequently released. For his daring act of patriotism, he is often referred to as the Bhagat Singh of the Hyderabad Liberation Struggle.

Explanation

The Udayagiri Caves, located near Vidisha in Madhya Pradesh, represent iconic rock-cut sanctuary architecture from the Gupta period. These caves are primarily renowned for their Vaishnava iconography and sculptures, rather than Shaivite ones. The most celebrated and archaeologically significant masterpiece of this site is the colossal relief sculpture of Lord Vishnu in his Varaha (boar) incarnation rescuing the earth goddess Bhudevi, situated in Cave 5. Therefore, pairing the Udayagiri cave temples primarily with Shiva sculptures is incorrect.

Explanation

Abdur Razzak, a Persian ambassador and scholar, visited the Vijayanagara Empire during the reign of Deva Raya II in 1443 CE. In his travelogue, he detailed the extraordinary wealth, vast size, and defensive architecture of the capital city of Vijayanagar. He described the city as having seven concentric lines of fortifying walls and expressed his immense awe of its grandeur, writing that the city was such that eye has not seen nor ear heard of any place resembling it upon the whole earth. The empire acted as a major political and cultural bulwark in Southern India, attracting numerous scholars, artists, and Hindu refugees from the northern regions during a period of significant geopolitical transitions.

Explanation

During the Great Depression of the 1930s, the global economic crisis severely impacted India's industrial sector, particularly the textile industry in Bombay. To offset falling commodity prices, declining profits, and intense competition from Japanese imports, the Bombay mill owners implemented drastic cost-cutting measures and reduced the wages of textile workers by 30% to 50%. This severe wage reduction led to widespread distress and major industrial strikes. Due to the resulting economic hardships, high unemployment, and wage cuts, a large number of migrant industrial workers were forced to leave the city and return to their ancestral rural villages, which led to a net decrease in the population of Bombay during this period.

Explanation

Sarojini Naidu hailed Muhammad Ali Jinnah as the ambassador of Hindu-Muslim unity after his crucial role in orchestrating the Lucknow Pact of 1916. During this phase of his political career, Jinnah was a member of both the Indian National Congress and the All India Muslim League, actively working to bring the two organizations together on a joint platform for constitutional reforms. Appreciating these efforts, Sarojini Naidu compiled a book of his speeches and writings in 1918, titled Mohomed Ali Jinnah: An Ambassador of Unity, where she popularized this title.

Explanation

Ashvaghosha is recognized as the earliest Sanskrit dramatist whose works have survived, albeit in fragmentary form. In the early 20th century, German expeditions discovered highly significant manuscript fragments written on palm leaves in Turfan, an oasis on the edge of the Gobi Desert in Central Asia. Among these fragments, scholars identified the remains of Buddhist dramas, most notably the Sariputraprakarana, which is explicitly attributed to Ashvaghosha. These fragments, dating back to the Kushana period around the 2nd century CE, represent the oldest known manuscript remains of Indian dramatic literature.

Explanation

Rao Bahadur Sitaram Keshav Bole (frequently referred to in legislative records as S. K. Bole or C. K. Bole) was a prominent social reformer and legislator. On March 19, 1926, he introduced the Joshi Vatan Bill, which eventually became the Invalidation of Hindu Ceremonial Emoluments Act, 1926, in the Bombay Legislative Council.

Prior to this legislative reform, hereditary village priests (Gram Joshis) held a customary monopoly and claimed a legal right to receive ceremonial fees (dakshina) for performing life-cycle rituals like weddings, even if the villagers chose to perform these rituals themselves or through other priests without inviting the Gram Joshi. The passage of this landmark bill in August 1926 dismantled this exploitative hereditary privilege by establishing that a Gram Joshi has no legal right to demand fees unless they are specifically invited and actually perform the religious services.

Explanation

Lord Lytton served as the Viceroy of India from 1876 to 1880, during which he introduced several reactionary policies that caused widespread resentment among the Indian public. In 1876, he reduced the maximum age limit for candidates appearing in the Indian Civil Service examination from 21 to 19 years, effectively curtailing the entry of Indians into the administrative services. To suppress growing criticism of British policies, he enacted the Vernacular Press Act of 1878, which placed severe restrictions on the freedom of non-English Indian newspapers. He also passed the Arms Act of 1878, making it a criminal offense for Indians to carry or possess firearms without a license, while exempting British and European subjects from these rules. Additionally, Lytton abolished import duties on British cotton goods to favor manufacturers in Lancashire, significantly harming the local Indian textile industry.

Explanation

The public organization of the Ganapati festival was initiated by Lokmanya Bal Gangadhar Tilak in Pune in 1893 as a means to mobilize masses, bypass British restrictions on public gatherings, and foster national consciousness. However, this initiative faced opposition from specific segments of the contemporary sociopolitical landscape.

The liberal Hindus belonging to the Reformist School of Mahadev Govind Ranade opposed the public celebrations. They believed that religious practices should remain a private affair rather than being brought into public spaces. They feared that using religious platforms for political mobilization would result in communal polarization, trigger religious conflicts, and undermine the broader movement for secular social reforms.

Similarly, the orthodox Congress politicians, who largely aligned with the Moderate faction of the Indian National Congress, expressed strong reservations against the festival. They preferred constitutional and secular methods of political agitation, such as petitions, debates, and administrative reforms. They were concerned that integrating overt Hindu religious symbols into the national movement would alienate the Muslim community, harm communal harmony, and provide the British administration with a pretext to suppress nationalist political activities.

Explanation

Sadashiv Nilkanth Joshi of Pune was an active revolutionary who led the Beed armed uprising against British rule in 1899. After the rebellion failed to achieve its objectives, Joshi successfully evaded the British police by going underground. To carry out his secret revolutionary activities, establish contact with other nationalist groups, and gather funds across different regions, he frequently changed his identity and utilized several code names and aliases, including Raosaheb Peshwa, Bhausaheb Limaye, Ganesh Keshav Limaye, Bhaurao Limaye, Bahusaheb Kashinath Khasgiwale, Rajesaheb, Vithal Chhatre, and Balwant Jagadamb.

Explanation

Bharat Stree Mahamandal was founded in 1910 in Allahabad by Sarala Devi Chaudhurani. It is recognized as the first all-India women's organization established by a woman for women. The primary objective of the association was to promote female education, abolish the purdah system, and work towards the moral and material advancement of women throughout India. It functioned as an independent national platform managed entirely by women without male or external interference.

Explanation

Jawaharlal Nehru and Sir Stafford Cripps shared a close personal friendship, leading Nehru to hold high expectations that Cripps would present a progressive and favorable proposal for Indian independence when he headed the mission to India in 1942. When the Cripps Mission instead offered dominion status with restrictive clauses—including provisions allowing provinces to opt out of the Union and maintaining British control over India's defense—Nehru felt deeply let down by his friend's defense of these British War Cabinet terms. This profound disappointment prompted him to confess that it was sad beyond measure that a man like Cripps should allow himself to become the devil's advocate.

Explanation

Statement b is incorrect because the voter turnout in the 1984 Lok Sabha elections was approximately 64.01% (about 64%), rather than 54%. This 1984 turnout stood as the previous highest voter turnout in Indian general election history until it was surpassed in 2014.

Explanation

In 1893, following communal clashes in Bombay and Pune, Lokmanya Bal Gangadhar Tilak sought a way to mobilize the Hindu community and bridge social divides across various castes. Prior to this, many Hindus routinely participated in the public celebrations of the Muslim festival of Mohurrum, which featured large-scale community processions and the symbolic immersion of taziyas (taboots) in water.

Tilak drew direct inspiration from the public nature, community cohesion, and the grand procession-and-immersion structure of Mohurrum to transform the private, domestic worship of Lord Ganesha into a public festival (Sarvajanik Ganeshotsav). By doing so, he established a parallel platform that allowed people of all social strata to gather publicly, sing patriotic songs, and foster nationalist sentiments under the guise of religious celebrations, circumventing British bans on political assemblies.

Explanation

The Walchand Group, pioneered by the visionary industrialist Seth Walchand Hirachand, established several landmark transport and infrastructure enterprises prior to India's Independence:

Hindustan Aircraft (a) was established in December 1940 in Bangalore in association with the Government of Mysore. It was later nationalized and renamed Hindustan Aeronautics Limited (HAL).

Scindia Steam Navigation Company (b) was founded in 1919 to challenge British maritime hegemony, becoming the first large-scale Indian-owned shipping company.

Premier Automobiles Limited (c) was incorporated in 1944 near Mumbai to lay the groundwork for indigenous automobile manufacturing in India.

Hindustan Motors (d) was established in 1942 by B. M. Birla of the Birla Group and was not associated with the Walchand Group.

Explanation

All the listed football players have worn the iconic jersey number 10 at some point in their professional careers, either for their club or national teams:

Lionel Messi wore jersey number 10 for Argentina and Barcelona.

Pele famously wore jersey number 10 for Brazil and Santos.

Neymar wore jersey number 10 for Brazil and Paris Saint-Germain.

Diego Maradona is iconic for wearing jersey number 10 for Argentina and Napoli.

Roberto Baggio wore jersey number 10 for Italy, Juventus, Bologna, and Brescia.

Kaka wore jersey number 10 for the Brazilian national team, particularly at the 2010 FIFA World Cup, and for Orlando City.

Ronaldo Nazario wore jersey number 10 for Brazil during Copa America tournaments and for Inter Milan during his debut 1997–98 season.

Wayne Rooney wore jersey number 10 for Manchester United and Everton.

Explanation

The average rate of temperature increase with increasing depth in the interior of the Earth, known as the geothermal gradient, is approximately 1°C for every 32 metres in the upper crust. This increase in temperature is primarily driven by the residual heat from the Earth's formation and the ongoing decay of radioactive isotopes in the crust and mantle. While this rate of temperature rise is not uniform and slows down significantly at much deeper levels in the mantle and core, the standard average rate near the surface remains 1°C per 32 metres.

Explanation

Mars possesses a very thin and tenuous atmosphere, with a surface pressure of only about 1% of Earth's. This atmosphere is composed of approximately 95% carbon dioxide, along with trace amounts of nitrogen, argon, and oxygen. Additionally, photographic and geological data collected by space missions have revealed winding channels, deltas, and valleys that strongly resemble dry riverbeds on Earth, indicating that liquid water once flowed extensively across the Martian surface in its ancient past.

Explanation

The Colorado River originates in the Rocky Mountains of Colorado and flows southwestward across the Colorado Plateau. Along its lower course, it traverses the extremely arid regions of the Mojave Desert and the Sonoran Desert before reaching its outlet at the Gulf of California. This makes it a classic example of an exotic river, which is a river that rises in a wet mountain region but flows through vast desert regions before emptying into the sea.

Explanation

A fold is a geological structure formed when originally flat and planar surfaces, such as sedimentary strata, are bent or curved as a result of tectonic compressional forces operating within the Earth's crust. This process of folding is a deformation mechanism associated with mountain-building orogeny and lateral crustal stress, rather than the movement, intrusion, or extrusion of molten magma or volcanic material.

Explanation

During the Allahabad meeting of the Central Khilafat Committee held from June 1 to 3, 1920, the nationalist Hindu progressives and radicals, supported by Gandhiji, were victorious. Gandhiji successfully persuaded the committee to accept his proposal for a non-cooperation movement to address the Khilafat issue and the Punjab wrongs. Consequently, a four-stage program of Non-Cooperation was announced, which included the boycott of government titles, civil services, police, and the army, culminating in the non-payment of taxes.

Explanation

The Golden Revolution in India, which took place between 1991 and 2003, is associated with a dramatic rise in the production of horticultural crops, fruits, and honey. Beekeeping (apiculture) was a central focus of this revolution, leading to a massive increase in raw honey production and providing a sustainable livelihood option for farmers in rural areas. Nirpakh Tutej is considered the father of the Golden Revolution in India.

Explanation

On 6th April 1930, when Mahatma Gandhi broke the salt law at Dandi to inaugurate the national Civil Disobedience Movement, the movement was simultaneously initiated in Maharashtra at Vile Parle, a suburb of Bombay. The Maharashtra War Council chose Vile Parle as the main satyagraha camp, or chhavani. Under the leadership of Jamnalal Bajaj, who served as the first leader of this camp, satyagrahis gathered to manufacture salt illegally by boiling seawater, establishing Vile Parle as a major center of nationalist activity in the Bombay Suburban District.

Explanation

Muga silk is a unique variety of wild silk known for its natural golden-yellow color, extreme durability, and shimmering glossy texture. India holds a global monopoly in its production. The silkworms (Antheraea assamensis) that produce Muga silk are reared primarily in Assam, which accounts for the vast majority of its production and holds a Geographical Indication (GI) tag for it. It is also traditionally cultivated and processed in neighboring areas of Northeast India and in certain non-traditional silk-producing regions like Bihar.

Explanation

B.K.S. Iyengar was the globally renowned founder of the style of yoga known as Iyengar Yoga and is widely credited with popularizing yoga across the world. He famously remarked, "Yoga helps us cure what cannot be endured and endure what cannot be cured," reflecting his belief in the therapeutic application of yoga to build physical resilience and mental fortitude. Over his long career, he taught numerous prominent personalities, including the celebrated violinist Yehudi Menuhin, cartoonist R.K. Laxman, actor Naseeruddin Shah, and cricket legend Sachin Tendulkar. For his immense contributions, he was honored with India's civilian awards, including the Padma Vibhushan, and was named one of the 100 most influential people in the world by Time magazine in 2004.

Explanation

Himachal Pradesh is recognized as India's first carbon-free state. The state government achieved this distinction by implementing a comprehensive environmental master plan, launching clean development mechanism projects, and mandating environmental audits across all of its departments. By actively expanding its forest cover to enhance carbon sequestration, harnessing its vast hydroelectric potential to meet energy requirements, and distributing energy-efficient appliances, the state set a benchmark for carbon-neutral growth and sustainable development in the country.

Explanation

During the Global Citizen Festival at New York's Central Park in September 2014, Prime Minister Narendra Modi addressed a crowd of over 60,000 people, primarily young Americans. At the conclusion of his speech, he delivered the iconic pop-culture sign-off from the Star Wars franchise, saying, “May the force be with you”. This unexpected reference to American cinematic culture resonated strongly with the youth-heavy audience and generated immense cheer and enthusiasm.

Explanation

The Tibetan Plateau is classified as an intermontane plateau rather than a tilted plateau. It is situated between massive mountain ranges, specifically the Himalayas to the south and the Kunlun Mountains to the north. Formed by the colossal tectonic collision of the Indian and Eurasian plates, this plateau represents a vast, extremely elevated landform surrounded on all sides by mountain barriers, rather than a crustal block that has undergone asymmetrical tilting in one direction.

Explanation

Africa is known as the land of a thousand languages due to its extraordinary linguistic diversity. The continent is home to an estimated 1,500 to 2,000 distinct native languages, which represent roughly one-third of the total languages spoken globally. These languages are traditionally grouped into major linguistic families: Niger-Congo, Afroasiatic, Nilo-Saharan, and Khoisan. This immense variety of languages spoken across various ethnic groups and regions makes Africa the most linguistically diverse continent in the world.

Explanation

Mary Quant, a pioneering British fashion designer, is widely credited with inventing and popularizing the miniskirt in the 1960s. She drew direct inspiration from the design and ethos of the Mini car, which was her favorite automobile. Quant named the revolutionary short skirt after the car because she believed both designs represented a modern, functional, and liberating youth culture.

Explanation

Amarnath, situated in Jammu and Kashmir, is famous for its natural ice Shivalinga that forms inside a cave temple. It is a highly revered Hindu pilgrimage site, but it is not classified as one of the twelve traditional Jyotirlingas. The twelve Jyotirlingas represent the physical manifestations of Lord Shiva as an infinite pillar of light, located at Somnath, Mallikarjuna, Mahakaleshwar, Omkareshwar, Kedarnath, Bhimashankar, Kashi Vishwanath, Trimbakeshwar, Vaidyanath, Nageshwar, Rameshwaram, and Grishneshwar.

Explanation

Insects constitute the largest and most diverse class of organisms on Earth, belonging to the phylum Arthropoda. Over 1 million species of insects have been documented and described by scientists, which represents more than half of all known living organisms and approximately 80% of the world's animal species. Estimates suggest the total number of existing insect species ranges between 5 million and 30 million, making them the group with the highest species richness in the world.

Explanation

The Constituent Assembly of India, which initially convened on 9 December 1946, took over as the Legislative Assembly of independent India at the stroke of midnight on 14 August 1947. Upon the commencement of the Constitution on 26 January 1950, the assembly ceased to exist as a constitution-making body and was transformed into the Provisional Parliament of India. It continued to serve as the unicameral provisional legislature of the nation until the first general elections were completed and the new bicameral Parliament was formally constituted in April 1952. This historical sequence validates the accuracy of the first statement.

On 24 January 1950, during the final meeting of the Constituent Assembly, 284 members signed the final copy of the Constitution of India. On this historic occasion, a light drizzle fell outside the Parliament House, which was joyfully interpreted by the members as an auspicious sign and a good omen for the future of the newly established republic. This validates the accuracy of the second statement. Since both statements are factually correct, neither of the given statements is incorrect.

Explanation

Eutrophication is the ecological process where water bodies receive excess nutrients, leading to an overgrowth of plants and algae. The primary limiting nutrients in aquatic ecosystems that drive this process are nitrogen and phosphorus. Excess nitrogen, which enters water bodies through fertilizer runoff, industrial waste, wastewater discharge, and atmospheric deposition of nitrogenous compounds, stimulates rapid algal blooms. As these massive algal populations die and decompose, they deplete dissolved oxygen levels in the water, leading to hypoxia and severe degradation of the aquatic environment.

Explanation

The correct matches between the environmental legislations and their respective years of enactment or introduction are as follows.

The Environmental Protection Act was enacted in the year 1986 to provide a comprehensive framework for environmental protection and improvement.

The Scheme of labelling of environment friendly products, commonly known as the Ecomark scheme, was launched in the year 1991 to guide consumers toward environmentally safe products.

The Biomedical Waste Management Rules were first notified in the year 1998 to govern the handling, treatment, and disposal of healthcare-related waste.

The Municipal Solid Wastes Management Rules were notified in the year 2000 to regulate the management of solid wastes generated by municipal authorities.

This matches A with III, B with I, C with IV, and D with II.

Explanation

Statement a is incorrect because Surendranath Banerjea did not voluntarily give up his position in the Indian Civil Service. He successfully cleared the competitive examination and was posted as an Assistant Magistrate in Sylhet. However, he was dismissed from the service by the British government in 1874 on the grounds of an alleged judicial irregularity, which was widely seen as a result of racial discrimination.

Statement b is incorrect because the second National Conference, convened by Surendranath Banerjea and the Indian Association, was held in Calcutta from December 25 to 27, 1885, not in Bombay. It was the inaugural session of the Indian National Congress that was held in Bombay during the same month from December 28 to 31, 1885.

Explanation

In India, alcohol is a state subject under the Seventh Schedule (State List, Entry 8) of the Constitution. Consequently, each state has its own specific excise and Abkari laws governing the manufacture, possession, and sale of alcoholic beverages. Under the laws of most states, the unlicensed manufacture of any intoxicant—including beer and wine—is illegal. Therefore, in most parts of India, it is illegal to home-brew without a license or permit from the respective State Excise Department.

Furthermore, there is no nationwide exemption that permits home-brewing without a permit for personal use. In dry states and several other states, any form of unauthorized brewing or manufacturing of alcohol is completely prohibited, even if intended solely for self-use.

Explanation

The National Population Policy 2000 was formulated to provide a policy framework for population control and stabilization in India. A core strategic goal of this policy was the promotion of a small family norm, specifically emphasizing the voluntary adoption of the two-child norm. It aimed to bring the total fertility rate to replacement level by strengthening reproductive health infrastructure, improving child survival rates, and ensuring voluntary family planning services.

Explanation

The Gender Inequality Index (GII) was introduced by the United Nations Development Programme (UNDP) in the 2010 Human Development Report to measure gender disparity. The index assesses the loss in human development due to inequality between female and male achievements across three critical dimensions. The first dimension is reproductive health, which is evaluated through maternal mortality ratios and adolescent birth rates. The second dimension is empowerment, measured by the proportion of parliamentary seats occupied by women and the level of secondary education attainment of both genders. The third dimension is labour market participation, which is determined by the labour force participation rate of female and male populations aged 15 years and older.

Explanation

The correlation coefficient ranges from -1 to +1. A correlation value of -0.39 between the proportion of urban population and the percentage of the population below the poverty line indicates a negative but weak-to-moderate relationship.

The negative sign indicates that higher levels of urbanization are associated with lower poverty rates. Because the magnitude of this coefficient is relatively low, the strength of this relationship is limited. This mild association demonstrates that the pattern of urbanization has not made a highly significant or deep impact on the reduction of poverty.

Explanation

The Right of Children to Free and Compulsory Education Act, 2009, which came into effect on 1 April 2010, was enacted to operationalize the fundamental right to education enshrined in Article 21A of the Constitution of India. The primary purpose of this legislation is to ensure that every child in the age group of 6 to 14 years has access to free and compulsory elementary education in a neighborhood school. Under this Act, "free" signifies that no child is liable to pay any fee or charges that might prevent them from pursuing and completing elementary education, while "compulsory" establishes a legal obligation on the government and local authorities to provide and ensure admission, attendance, and completion of elementary education for all children in this age range.

Explanation

Article 46 of the Indian Constitution, under the Directive Principles of State Policy (DPSP) in Part IV, directs the State to promote with special care the educational and economic interests of the weaker sections of the people, and, in particular, of the Scheduled Castes and the Scheduled Tribes, and to protect them from social injustice and all forms of exploitation.

Because land is the primary source of economic sustenance, identity, and security for tribal communities, restricting or prohibiting the transfer of land from tribals to non-tribals is a vital policy measure. It directly fulfills this constitutional mandate by protecting tribal populations from land alienation, economic exploitation, and displacement. Under these constitutional guidelines, several state governments have enacted land reform legislations and regulations to safeguard tribal land ownership and ensure the restoration of alienated lands.

Explanation

The Reserve Bank of India (RBI) issues currency notes in accordance with the Minimum Reserve System, which has been followed since 1956. Under this framework, the RBI is required to maintain a minimum backup of assets worth ₹200 crores at all times to secure the value of the currency in circulation. Out of this total statutory reserve, the note issuing department of the RBI must always hold a minimum stock of gold coins or gold bullion worth ₹115 crores, with the remaining balance of ₹85 crores held in the form of foreign securities.

Explanation

During the Ninth Five-Year Plan (1997–2002), the Indian economy maintained stable price levels with the average annual rate of inflation hovering around 4%. This period emphasized growth with social justice and equity, and the moderate inflation rate helped shield the purchasing power of consumers.

During the Tenth Five-Year Plan (2002–2007), which targeted high GDP growth, the average annual inflation rate was kept under control at approximately 5%. This disciplined monetary environment supported robust macroeconomic expansion while preventing excessive price rises.

Explanation

The Tenth Five Year Plan (2002–2007) introduced state-specific targets as a unique feature to promote decentralized planning and reduce regional disparities. For the first time, the Planning Commission of India established state-wise growth and socio-economic developmental targets in detailed consultation with the respective State Governments. This consultative approach aimed to make states active participants in the national planning process, taking into account their unique resource potentials, developmental needs, and regional constraints.

Explanation

The Total Fertility Rate is a demographic metric representing the average number of live births a woman would have over her entire reproductive lifespan, typically defined as ages 15 to 49, if she were to experience the prevailing age-specific fertility rates of a given year throughout her childbearing years.

Explanation

Commercial cold storage of butter requires deep freezing temperatures to maintain quality and prevent spoilage over extended periods of time. Storing butter at -20°C effectively halts the activity of lipase enzymes and prevents both oxidative and hydrolytic rancidity, which cause unpleasant off-flavors. This temperature also stops any potential microbial growth and preserves the original physical emulsion of water and fat, ensuring the butter remains fresh and retains its desired texture for up to a year or longer.

Explanation

Lidar (Light Detection and Ranging) is a remote sensing technology that uses pulsed laser light to measure distances to the Earth's surface. By emitting rapid laser beams and measuring the time it takes for the reflected light to return to the sensor, Lidar systems generate highly accurate, three-dimensional spatial data. This technology is widely utilized in environmental monitoring for applications such as mapping forest canopy heights, estimating biomass, tracking coastal erosion, profiling atmospheric aerosols, and modeling terrain topography.

Explanation

Polyphenol oxidase is the primary enzyme responsible for the enzymatic browning reaction in fruits and vegetables. When plant cells are damaged due to cutting, slicing, or bruising, polyphenol oxidase is released and comes into contact with molecular oxygen. This enzyme catalyzes the oxidation of endogenous phenolic compounds into reactive o-quinones. These quinones then spontaneously polymerize to form dark melanoidin pigments, resulting in the characteristic brown discoloration of the tissue.

Explanation

TV transmission uses high-frequency radio waves, generally in the VHF and UHF bands above 30 MHz, which easily penetrate the ionosphere and cannot be reflected back to Earth via ionospheric reflection. Ground wave propagation is also ineffective for long distances because high-frequency signals attenuate rapidly as they travel along the Earth's surface. Therefore, global transmission of television programmes requires geostationary satellites. Placed in a circular orbit at an altitude of approximately 35,786 km directly above the equator, these satellites rotate with the same angular velocity as the Earth, making them appear stationary relative to a ground observer. Three such strategically placed satellites can cover almost the entire globe, enabling uninterrupted television broadcasting across the world.

Explanation

Polyethylene is the most widely produced polymer globally and serves as the most common and cost-effective plastic film for food packaging applications. Its low manufacturing cost, high flexibility, excellent chemical resistance, and superior moisture barrier properties make it ideal for wrapping and packaging various solid food materials. Low-density polyethylene (LDPE) and high-density polyethylene (HDPE) are extensively utilized because they are lightweight, easily heat-sealable, and certified safe for direct contact with food products.

Explanation

Standard glass absorbs nearly all ultraviolet (UV) radiation, particularly UV-B and UV-C wavelengths, due to its molecular structure and the presence of metallic oxide impurities like iron, sodium, and calcium. This makes ordinary glass highly opaque to UV rays. Conversely, materials such as quartz, fluorite, and rock salt have very high transparency to ultraviolet light because they possess a wide band gap and lack the impurities that capture UV photons. As a result, UV rays can easily transmit through quartz, fluorite, and rock salt, which is why these substances are frequently used to manufacture lenses, windows, and prisms in UV spectroscopy.

Explanation

In optical instruments like telescopes, using a single lens as an eyepiece results in significant optical aberrations, such as chromatic and spherical aberrations, and provides a limited field of view. To overcome these limitations, a system of two lenses is utilized to function as a single unit. This unit consists of a field lens, which is positioned closer to the objective to collect and redirect light rays, and an eye lens, which is situated closer to the observer's eye to magnify the intermediate image. Together, this combination of a field lens and an eye lens forms a compound eyepiece, such as the Huygens or Ramsden eyepiece, which significantly improves image quality and widens the field of view.

Explanation

The total energy E of a satellite of mass m orbiting the Earth of mass M in a circular orbit of radius r is the sum of its kinetic energy Eₖ and gravitational potential energy U.

The orbital velocity of the satellite is v = √(GM/r), which gives the kinetic energy: Eₖ = ½ mv² = GMm / 2r

The potential energy of the satellite is: U = -GMm / r

The total energy E is: E = Eₖ + U = GMm / 2r - GMm / r = -GMm / 2r = -Eₖ

To escape the Earth's gravitational influence, the satellite's total energy must be increased to at least zero. If ΔE is the minimum energy to be added, then: E + ΔE = 0 -Eₖ + ΔE = 0 ΔE = Eₖ

Explanation

In August 2006, the International Astronomical Union redefined the criteria for a celestial body to be classified as a planet. Under this definition, a planet must orbit the Sun, possess sufficient mass to assume a nearly round shape, and clear the neighborhood around its orbit. Pluto fails to meet the third criterion because it shares its orbital zone with numerous other objects in the Kuiper Belt. As a result of this decision, it was reclassified from a major planet to a dwarf planet.

Explanation

During aerobic respiration, oxygen functions as the terminal or final electron acceptor at the end of the electron transport chain in the inner mitochondrial membrane. Due to its high electronegativity, oxygen attracts and accepts low-energy electrons that have passed through the transport chain. Upon receiving these electrons, oxygen combines with free protons to form water (H₂O). This terminal electron acceptance is critical because it keeps the electron transport chain flowing, which sustains the proton gradient required for ATP synthesis.

Explanation

During vigorous muscular activity, the demand for energy increases rapidly, and the oxygen supply to the muscle cells becomes insufficient to meet this demand. To generate energy under these anaerobic conditions, the muscle cells break down glucose through anaerobic glycolysis. In this process, pyruvate is converted into lactic acid instead of entering the aerobic pathway. The accumulation of lactic acid in the muscles lowers the local pH, causing muscle fatigue and the characteristic aching or soreness associated with strenuous exercise.

Explanation

Hematuria is the medical term for the presence of red blood cells in the urine, which gives the urine a red, pink, or bloody appearance. This clinical condition can be classified as gross hematuria, which is visible to the naked eye, or microscopic hematuria, which is only detectable under a microscope. It typically indicates underlying issues in the urinary tract, such as infections, kidney stones, trauma, or renal disease.

Explanation

Agri-mycin is an agricultural bactericide formulation that primarily contains streptomycin, which is an antibiotic. It is highly effective in controlling and preventing a wide range of bacterial plant pathogens. It is commonly applied to suppress destructive bacterial plant diseases, such as fire blight in apples and pears, bacterial spot in tomatoes and peppers, and wild fire in tobacco, by inhibiting bacterial protein synthesis.

Explanation

In the human digestive system, the pH levels of different organs vary significantly to facilitate specific stages of digestion:

Mouth: Saliva typically maintains a neutral to slightly alkaline pH, generally between 6.7 and 7.4. During eating, active secretion of bicarbonate ions in the saliva buffers the oral cavity, creating a slightly alkaline environment that is optimal for the action of salivary amylase.

Stomach: The stomach environment is highly acidic, with a pH of 1.5 to 3.5. This acidity is caused by the secretion of hydrochloric acid (HCl), which is crucial for killing ingested microorganisms and activating the protein-digesting enzyme pepsin.

Intestines to Anus: As food enters the small intestine, the highly acidic chyme is neutralized by alkaline pancreatic juices and bile, which contain high concentrations of bicarbonate ions. This raises the pH to an alkaline level of 7.0 to 8.5, which is necessary for the function of pancreatic enzymes. This alkaline to near-neutral environment is maintained through the rest of the gastrointestinal tract, including the large intestine, rectum, and anus.

Explanation

Magnesium (Mg) is an essential plant macronutrient required by plants in relatively large quantities for healthy growth and development. It occupies the central position in the chlorophyll molecule, making it indispensable for the process of photosynthesis where light energy is captured and converted into chemical energy. Beyond its structural role in chlorophyll, magnesium acts as an enzymatic activator for many vital physiological processes, including carbohydrate metabolism, nucleic acid synthesis, and energy transfer reactions.

Explanation

The molecular formula of glucose is C₆H₁₂O₆. The molar mass of glucose is calculated using the atomic masses of carbon (12 g/mol), hydrogen (1 g/mol), and oxygen (16 g/mol) as follows:

Molar mass of C₆H₁₂O₆ = (6 × 12) + (12 × 1) + (6 × 16) = 72 + 12 + 96 = 180 g/mol

The total mass of carbon in one mole of glucose is 72 g. The percentage composition of carbon is determined by:

Percentage of carbon = (Mass of carbon / Molar mass of glucose) × 100 Percentage of carbon = (72 / 180) × 100 = 40%

Explanation

Leaves are the most frequently used plant parts for medicinal purposes due to several key physiological and ecological reasons. As the primary organ of photosynthesis, leaves are highly active metabolic centers where a diverse array of therapeutic secondary metabolites—including alkaloids, flavonoids, glycosides, and essential oils—are synthesized and concentrated. Ethnobotanical studies show that leaves are easily accessible and abundant throughout most seasons. Additionally, harvesting leaves is a highly sustainable, non-destructive practice that allows the medicinal plant to survive and continue growing, ensuring a continuous supply of therapeutic material.

Explanation

Sodium (Na) is the primary cation of the extracellular fluid in the human body. It plays a critical role in maintaining osmotic pressure, controlling fluid volume, and regulating the acid-base balance. The kidneys maintain the body's pH balance through tubular secretion and reabsorption processes, where sodium ions are exchanged with hydrogen (H⁺) ions. Additionally, sodium is associated with bicarbonate (HCO₃⁻), which is a key component of the bicarbonate buffer system that neutralizes excess acids in the bloodstream.

Explanation

A hygroscopic chemical substance has a strong affinity for water and readily attracts and absorbs or adsorbs moisture from its surrounding environment. Due to this capability to extract water vapor from the air or remove water content from other substances, hygroscopic materials are widely utilized as highly effective drying agents, which are also referred to as desiccants.

Explanation

The Maharashtra Animal Preservation (Amendment) Act, 1995, which received Presidential assent on March 2, 2015, extended the ban on slaughter to bulls, bullocks, and calves. The legislation excludes water buffaloes, both male and female, and their calves from this ban, thereby continuing to permit their slaughter under specific regulations. Meat from buffaloes, commonly referred to as carabeef, remains legal to trade and consume in the state.

Explanation

The major river systems in Maharashtra are part of the peninsular drainage system of India. Peninsular rivers are entirely rain-fed, relying on precipitation from the southwest monsoon. Unlike Himalayan rivers, which are fed by glaciers and remain perennial, peninsular rivers do not have a constant source of water and experience a highly seasonal flow, often drying up or experiencing drastically reduced water volume during the dry pre-monsoon summer months. As a result, no naturally occurring perennial rivers flow all year round in Maharashtra.

Explanation

Ernest Rutherford discovered alpha particles in 1899 during his pioneering research on radioactivity. By observing the radiation emitted from uranium, he identified two distinct types of emissions based on their ability to penetrate matter and ionize gases, naming them alpha and beta radiation. His later work demonstrated that alpha particles are high-speed, positively charged helium nuclei consisting of two protons and two neutrons, denoted as He²⁺.

Explanation

In India, the financial year for a co-operative organization is from 1st April to 31st March. This standardizes the accounting period across all co-operative societies, aligning them with the uniform financial year utilized for government administration, taxation under the Income Tax Act, 1961, and regulatory audits. At the end of this period, co-operative organizations finalize their accounts, prepare financial statements, and conduct statutory audits.

Explanation

Albert Einstein wrote the famous adage "Science without religion is lame, religion without science is blind" in his essay titled "Science and Religion", which was published in 1940. This paper was prepared for the first Conference on Science, Philosophy and Religion in Their Relation to the Democratic Way of Life, held in New York. In this work, Einstein explored the complementary nature of scientific inquiry and religious feeling, arguing that while science can only ascertain what is, religion deals with evaluations of human thought and action, meaning the two domains are independent yet intimately related and mutually dependent.

Explanation

Under the Rules of Procedure and Conduct of Business in Lok Sabha (specifically Rule 197), a member can give not more than two Calling Attention Notices for any one sitting. Therefore, statement c is incorrect.

Explanation

Statement 'a' is correct because Great Britain adheres to the principle of Parliamentary Sovereignty. Under this doctrine, the British Parliament is the supreme law-making authority, meaning that courts cannot strike down or declare primary legislation (Acts of Parliament) unconstitutional, thus permitting no judicial review of legislation.

Statement 'b' is correct because the Indian constitutional system represents a unique synthesis of British Parliamentary Sovereignty and American Judicial Supremacy. In the United States, the judiciary enjoys broad and virtually unrestricted powers of judicial review under the doctrine of "due process of law." In contrast, the scope of judicial review in India is defined and limited by the constitutional text and governed primarily by "procedure established by law," making the Indian judiciary less supreme in comparative scope than that of the United States.

Explanation

The British Constitution is an unwritten, uncodified constitution made up of multiple historical documents, conventions, statutes, and common laws. In this constitutional setup, parliamentary sovereignty is a core principle, meaning that the British Parliament has supreme legal authority and can enact or repeal any law. Due to the absence of a rigid codified document, constitutional changes can be enacted through the ordinary legislative process with a simple majority, making it the most flexible constitution. Consequently, all three statements are correct, meaning none of them is incorrect.

Explanation

During the first innings of the fourth Test match against England at Old Trafford, Manchester, on August 7, 2014, the Indian cricket team equalled the world record for the most ducks (six) in a single Test innings. The six Indian batsmen dismissed for zero runs were Gautam Gambhir, Cheteshwar Pujara, Virat Kohli, Ravichandran Ashwin, Bhuvneshwar Kumar, and Pankaj Singh.

Explanation

The word tsunami originates from the Japanese language, combining two distinct characters. The Japanese character tsu translates directly to harbour, port, or inlet, while the character nami translates to wave. When joined together, they form the word tsunami, which literally translates to harbour wave. This name was historically given by Japanese fishermen who, upon returning from the deep ocean where the long-period waves passed unnoticed, found their harbours and coastal villages devastated by the massive waves hitting the shore.

Explanation

Frederick Sanger received his first Nobel Prize in Chemistry in 1958 for his groundbreaking work on the structure of proteins, especially insulin. He was awarded his second Nobel Prize in Chemistry in 1980 for his contributions to the determination of base sequences in nucleic acids. The gap between his two awards is 22 years, which is greater than 20 years.

Explanation

In boxing, the two competing fighters are assigned to opposite corners of the ring, designated as the red corner and the blue corner. Throughout the match, they are referred to by these colors, which are also used on their gloves or protective gear for easy identification by officials, judges, and the referee. At the conclusion of a match, particularly when declaring the result inside the ring, the referee will acknowledge the fighters by their corner colors.

Explanation

Under the Administrative Tribunals Act, 1985, which was enacted pursuant to Article 323A of the Constitution of India, the State Administrative Tribunals are established to adjudicate service-related disputes of state government employees. The Chairman, Vice-Chairman, and other members of a State Administrative Tribunal are appointed by the President of India. This appointment is made after formal consultation with the Governor of the concerned state. This ensures a centralized and impartial selection process for administrative adjudicators at the state level.

Explanation

The basic structure doctrine, propounded by the Supreme Court of India in the landmark Kesavananda Bharati case of 1973, establishes that the amending power of Parliament under Article 368 is not absolute. The Court ruled that while Parliament has the power to amend the Constitution, it cannot alter, damage, or destroy its core, essential features. These fundamental features form the bedrock of the Constitution and are considered so integral to its identity and philosophy that any amendment seeking to abrogate them is held to be invalid.

Explanation

The Secretary General of each House of Parliament is a permanent, non-political officer who heads the respective Secretariat. In this role, the Secretary General acts as a friend, philosopher, and guide to the members of Parliament, the parliamentary committees, and the presiding officers.

The Secretary General provides authoritative, non-partisan, and objective advice on parliamentary practice, rules of procedure, customs, and precedents. This assistance enables members to effectively perform their legislative duties, such as drafting bills, motions, and questions, thereby ensuring the smooth and orderly functioning of the House.

Explanation

According to the 2011 Census of India, the average population density of Maharashtra is 365 persons per square kilometer. Among the districts of Maharashtra, Aurangabad district also has a population density of exactly 365 persons per square kilometer, making its density equal to that of the entire state.

Explanation

The Mumbai-Pune Expressway, officially known as the Yashwantrao Chavan Expressway, is India's first six-lane, high-speed, access-controlled concrete toll expressway. Developed by the Maharashtra State Road Development Corporation, the expressway covers a total distance of 93 km (often cited as 94.5 km) starting from Kalamboli in Navi Mumbai and ending at Kiwale in Pune. It dramatically reduced the travel time between the two major cities by bypassing the heavily congested old national highway route through the Sahyadri mountain ranges.

Explanation

Ramon Magsaysay, the seventh President of the Philippines, tragically died in an air crash on March 17, 1957. The presidential aircraft, a Douglas C-47 named Mount Pinatubo, struck the slopes of Mount Manunggal on the island of Cebu during a flight to Manila. Only one person out of the twenty-six individuals on board survived the crash. In April 1957, shortly after his death, the Ramon Magsaysay Award was established to honor his memory, integrity, and democratic spirit.

Explanation

Cross-country skiing (known as langrenn in Norwegian) is the national sport of Norway. It holds immense cultural and historical significance in the country, where skiing has been practiced for thousands of years, initially as a essential means of transportation during the long, snowy winters. Today, it remains a cornerstone of Norwegian lifestyle and recreation, reflected in the popular saying that Norwegians are born with skis on their feet. Norway is also the most successful nation in the history of competitive cross-country skiing, consistently dominating international events and the Winter Olympic Games.

Explanation

Originally, under the initial rules and conventions governing the display of the Indian National Flag, private individuals and organizations were restricted from hoisting the flag on ordinary days. Private citizens were only permitted to fly the flag on specific National Days of significance, such as Independence Day and Republic Day. This restriction was addressed following the landmark Supreme Court ruling in the Union of India vs. Naveen Jindal case, which declared the right of every citizen to fly the National Flag with dignity as a fundamental right under Article 19(1)(a) of the Constitution of India. This led to the comprehensive Flag Code of India, 2002, allowing citizens to hoist the flag freely on all days. The Flag Code was subsequently amended in 2005 to permit the depiction of the flag on certain apparel and garments above the waist, rather than in 2007.

Explanation

The Jnanpith Award, also spelled as Gyanpeeth Award, was instituted in 1961 by the Bharatiya Jnanpith. This cultural and literary organization was founded in 1944 by the industrialist Sahu Shanti Prasad Jain and his wife Rama Jain. The Sahu Jain family are the owners and publishers of Bennett, Coleman and Co. Ltd., the media group that publishes The Times of India.

Explanation

During the Bezawada (now Vijayawada) session of the All India Congress Committee in 1921, Pingali Venkayya presented a flag consisting of red and green bands, which represented the Hindu and Muslim communities respectively. Mahatma Gandhi suggested the addition of a white strip to represent all other religious and minority communities of India, as well as the spinning wheel (charkha) in the center to symbolize progress and self-reliance.

Explanation

Statement a is incorrect because not all Commonwealth countries recognise the British monarch solely as the Head of the Commonwealth. While many member countries are republics (like India) or have their own monarchs, a subset of member nations known as Commonwealth realms (such as Canada, Australia, and New Zealand) recognise the British monarch as their official, titular Head of State.

Statement b is incorrect because diplomatic representatives exchanged between member nations of the Commonwealth are officially addressed as High Commissioners, rather than Ambassadors. The title of Ambassador is used for diplomatic missions between Commonwealth and non-Commonwealth nations, or between non-Commonwealth nations.

Explanation

The famous Indian author, journalist, and diplomat Khushwant Singh wrote his own self-deprecating epitaph several years before his death in March 2014. Best known for his historical novel Train to Pakistan and his widely read weekly column With Malice towards One and All, Singh was celebrated for his secularism, sharp wit, and unsparing sarcasm. He included this epitaph in his book Khushwantnama: The Lessons of My Life, where he expressed a desire to be remembered simply as someone who made people smile. The full poetic epitaph reads: Here lies one who spared neither man nor God; Waste not your tears on him, he was a sod; Writing nasty things he regarded as great fun; Thank the Lord he is dead, this son of a gun.

Explanation

The official emblem of the United Nations features a map of the world in an azimuthal equidistant projection centered on the North Pole. This polar projection extends to 60 degrees south latitude, presenting a global view that represents all the peoples and countries of the world. It is framed by a wreath of crossed conventional olive tree branches, symbolizing world peace.

Explanation

Atal Bihari Vajpayee served as the Prime Minister of India three times between 1996 and 2004. His first tenure was for 13 days in 1996, his second tenure was for 13 months from 1998 to 1999, and his third tenure lasted a full term from 1999 to 2004.

He was elected to the Lok Sabha ten times (1957, 1967, 1971, 1977, 1980, 1991, 1996, 1998, 1999, and 2004) and to the Rajya Sabha twice (1962 and 1986).

Explanation

R.K. Laxman started his legendary daily cartoon strip titled You Said It in The Times of India in 1951. The series featured his iconic creation, the Common Man, who clad in a dhoti and a checked jacket, silently observed and represented the plight, sarcasm, and resilience of the average Indian citizen amidst the country's political and socio-economic changes. The cartoon became a staple of Indian journalism, running daily for over fifty years.

Explanation

Vatican City is the smallest independent state in the world, with a land area of approximately 0.44 square kilometers (about 108 acres), which is well below 1 square kilometer. The population of Vatican City around 2015 was estimated to be approximately 800 to 1,000 residents, which exceeds 500.

Explanation

Under the administration of Lord Cornwallis, the Cornwallis Code of 1793 was introduced to reform the governance of British India. Guided by the principle of the separation of powers, Cornwallis believed that vesting absolute power in a single person was undesirable. Consequently, he stripped the District Collectors of their judicial and magisterial duties, restricting their role strictly to revenue collection. The judicial responsibilities were instead transferred to newly established District Judges who presided over the District Civil Courts.

Explanation

Malala Yousafzai was born on July 12, 1997, in Mingora, Pakistan. She was awarded the Nobel Peace Prize in October 2014, alongside Indian child rights activist Kailash Satyarthi, for her struggle against the suppression of children and young people and for the right of all children to education. Having received the award at the age of 17, she is the youngest Nobel laureate in history.

Explanation

India's first pilot project to test ethanol-run public transport buses was launched in Nagpur, Maharashtra in August 2014.

Initiated under the Green Bus project, the environment-friendly bus was manufactured and handed over to the Nagpur Municipal Corporation (NMC) by the Swedish commercial vehicle manufacturer Scania. Operating on 95% ethanol fuel, these buses are designed to significantly reduce greenhouse gas emissions, carbon footprint, and local air pollution compared to conventional diesel buses.

Explanation

Shri Bhalchandra Nemade’s celebrated Marathi novel is titled Hindu: Jagnyachi Samrudha Adgal. The subtitle Jagnyachi Samrudha Adgal literally translates to "A Rich Obstacle to Living" or "A Prosperous Obstruction of Living". The novel explores how Hindu culture, while historically rich and profound, is filled with contradictions and pluralities that act as a heavy, cluttering obstacle to contemporary living.

Explanation

Ebola virus disease is a zoonotic illness introduced into the human population through close contact with the blood, secretions, organs, or other bodily fluids of infected wild animals. These animals primarily include fruit bats, which are considered the natural reservoir hosts, as well as non-human primates such as chimpanzees, monkeys, and gorillas. Conversely, there is no scientific evidence that mosquitoes or other blood-feeding insects can transmit or act as vectors for the Ebola virus. Therefore, mosquitoes cannot be the organism through which Ebola is introduced into humans.

Explanation

Nelson Mandela was arrested on 5 August 1962 for his anti-apartheid activism and conspiracy to overthrow the state. He was subsequently sentenced to life imprisonment during the Rivonia Trial. He spent 27 years behind bars, being held at Robben Island, Pollsmoor Prison, and Victor Verster Prison, before his historic release on 11 February 1990. Following his release and the transition to multi-racial democracy, he was elected and inaugurated as the first President of a democratic South Africa on 10 May 1994.