MPPSC Prelims 2009 Question Paper with Answers & Explanations

Explanation

The Harappans were known for their advanced urban planning, which included sophisticated water management and drainage systems, as well as the construction of wells. They utilized corbelling, a technique to create a false arch, but did not possess knowledge of true arches. While they built impressive structures using bricks, there is no evidence of true arch construction in Harappan architecture. Their cities featured well-organized public and private wells, elaborate drainage systems with covered drains, and multi-story buildings, but not true arches.

Explanation

Daimabad, an archaeological site in Maharashtra, India, is renowned for the discovery of a copper chariot from the Late Harappan period. This significant find, part of a hoard of bronze artifacts, provides crucial insights into the technological and artistic capabilities of the Harappan civilization and suggests its southern extent into the Deccan Plateau. The copper chariot, along with other bronze sculptures of animals, highlights the advanced metallurgical skills of the Harappans.

Explanation

Sudharma, also known as Arya Sudharma, became the chief of the Jain Sangh after the death of Mahavir. Mahavir had eleven principal disciples, called Ganadharas, but ten of them passed away during his lifetime. While Indrabhuti Gautama, another surviving Ganadhara, attained omniscience (Keval-jnan) the day after Mahavir's Nirvana, Jain tradition states that a Kevali monk does not take on a leadership role. Therefore, Sudharma, who was the only other surviving Ganadhara, assumed leadership of the Jain community and played a crucial role in preserving and propagating Mahavir's teachings. He led the Jain order for 12 years and compiled Mahavir's teachings into the Jain Agamas.

Explanation

Jivaka, the renowned royal physician of Rajgriha, was the son of a Ganika named Salavati. Salavati was a courtesan of Rajagaha (Rajgriha). She abandoned Jivaka at birth, and he was later rescued and raised by Prince Abhaya. Jivaka went on to become a celebrated physician, serving both King Bimbisara and the Buddha.

Explanation

Pushyamitra Sunga is widely recognized as the protector of the Varna system. He was a staunch supporter of Brahmanical orthodoxy and is credited with the revival of Vedic rituals and sacrifices after the Mauryan emphasis on Buddhism. Pushyamitra, a Brahmin, performed two Ashvamedha Yajnas (horse sacrifices), which symbolized royal authority and the reinforcement of the Varna system. His reign saw a resurgence of Hindu rituals and the strengthening of the position of Brahmins in society, with the social structure becoming more rigid as the four-fold Varna system was strengthened.

Explanation

Alauddin Khalji established the Diwan-i-Mustakharaj. This department was created to address the inefficiencies and corruption prevalent in the revenue collection system of the Delhi Sultanate. Its primary function was to investigate and recover arrears from revenue officials and ensure a more systematic and just collection of taxes. The establishment of Diwan-i-Mustakharaj aimed to streamline the state's financial administration and increase revenue.

Explanation

Abul Fazl, a prominent historian and advisor in Emperor Akbar's court, was assassinated in 1602 by Vir Singh Deo Bundela. This act was carried out at the instigation of Prince Salim, Akbar's son, who later became Emperor Jahangir. Prince Salim resented Abul Fazl, viewing him as an obstacle to his ascension to the Mughal throne and believing he was working against him. Vir Singh Deo Bundela, a Bundela chieftain, ambushed Abul Fazl's convoy while he was returning from the Deccan, beheaded him, and sent his head to Prince Salim.

Explanation

Mughal Emperor Akbar II sent Raja Ram Mohan Roy to London in 1830 as his envoy. Akbar II bestowed the title of 'Raja' upon Ram Mohan Roy for this significant mission. The primary purpose of this embassy was to appeal to the British government to increase the Emperor's allowance and perquisites. Additionally, Roy was tasked with ensuring that Lord William Bentinck's Bengal Sati Regulation of 1829, which banned the practice of Sati, was not overturned.

Explanation

Ijara was a system of land revenue collection prevalent during the Mughal period and later under British rule. Under this system, the right to collect land revenue for a specific area was contracted out to individuals or groups, known as Ijaradars, who would pay a fixed sum to the government. These Ijaradars were then responsible for collecting taxes from the farmers, often at a higher rate, to cover their payment and earn a profit. This practice is also referred to as revenue farming.

In contrast, Zabti was a land revenue assessment system based on land measurement and fixed cash rates for crops, primarily introduced by Akbar. Kankut involved estimating the grain yield or productivity of the land to determine revenue. The term "Theka" generally refers to a contract or a shopkeeper, and "Thika" also refers to a type of tenancy, but not specifically the system of contracting out land revenue collection.

Explanation

Sir Syed Ahmad Khan founded the Scientific Society in 1864 in Ghazipur, India. His primary aim was to promote modern education and scientific knowledge among Indians, particularly Muslims, by translating Western scientific and literary works into Urdu. The society sought to bridge the knowledge gap and encourage a rational, scientific approach to thinking and education. This initiative was a crucial part of the broader Aligarh Movement, which aimed to modernize Indian Muslims through education and eventually led to the establishment of the Muhammadan Anglo-Oriental College, now Aligarh Muslim University.

Explanation

The 'White Mutiny' that took place during Lord Ripon's Viceroyalty refers to the widespread protests by the European community in India against the Ilbert Bill in 1883. Lord Ripon, a liberal Viceroy, introduced the Ilbert Bill to remove racial discrimination in the judicial system, allowing Indian judges to preside over cases involving European subjects. This proposal sparked furious opposition from the British and Anglo-Indian communities, who viewed it as an attack on their privileged status and racial superiority. The intense backlash forced Lord Ripon to amend the bill, significantly weakening its original intent.

Explanation

Valentine Chirol, a British journalist and author, is credited with coining the phrase "The Father of Indian Unrest" to describe Bal Gangadhar Tilak. Chirol used this epithet in his 1910 book, "Indian Unrest," where he extensively criticized Tilak's nationalist activities and his role in stirring anti-British sentiment in India. His writings portrayed Tilak as a key figure instigating political agitation and challenging British rule. This label became widely associated with Tilak, highlighting his significant influence on the Indian independence movement.

Explanation

Captain Mohan Singh was the Commander-in-Chief of the first Indian National Army (INA) before Subhash Chandra Bose. He founded the initial iteration of the INA in 1942 in Singapore, recruiting Indian prisoners of war captured by the Japanese during World War II. Mohan Singh's efforts laid the groundwork for the INA, aiming to liberate India from British rule. However, due to disagreements with the Japanese over their intentions and the treatment of INA soldiers, Mohan Singh disbanded the force in December 1942 and was arrested. Subhash Chandra Bose later revived and reorganized the INA in 1943, transforming it into a more prominent force in the Indian independence movement.

Explanation

The Nizam of Hyderabad, Nizam Ali Khan (Asaf Jah II), was the first Indian native ruler to accept the system of Subsidiary Alliance. He entered into this alliance with the English East India Company on September 1, 1798. This system was formally developed and implemented by Lord Wellesley, who served as the Governor-General of India from 1798 to 1805. The alliance made Hyderabad the first princely state to officially become a British protectorate, effectively reducing the power of the local kingdom while strengthening British colonial influence. The Nizam's decision was influenced by the need for protection against regional rivals like the Marathas and the British aim to eliminate French influence in the Deccan.

Explanation

Nimbostratus is classified as a low cloud, though it can extend into the middle and high levels of the troposphere. Its base is typically found near the surface, ranging up to about 2,000 to 4,000 meters (6,600 to 13,100 ft) in the middle levels of the troposphere. These clouds are dark gray, often cover the entire sky, and produce continuous rain or snow. In contrast, Cirrocumulus, Cirrostratus, and Altocumulus are all higher-level clouds. Cirrocumulus and Cirrostratus are high-level clouds, usually found above 6,000 meters (20,000 ft) and composed primarily of ice crystals. Altocumulus clouds are mid-level clouds, typically occurring between 2,000 and 7,000 meters (6,500 and 23,000 ft).

Explanation

The speed at which a planet revolves around the sun is related to its orbital period, with planets further from the sun having longer orbital periods and thus revolving more slowly. Among the options provided, Pluto is no longer classified as a planet. Jupiter has an orbital period of approximately 11.86 Earth years, and Mars has an orbital period of about 1.88 Earth years. The planet that revolves very slowly around the sun, meaning it has the longest orbital period, is Neptune, with an orbital period of about 164.8 Earth years. Therefore, none of the given options correctly identify the planet that revolves very slowly around the sun.

Explanation

An isohyet is a line on a map that connects points receiving equal amounts of precipitation or rainfall over a given period. The term originates from the Greek words "iso," meaning equal, and "hyetos," meaning rain. In contrast, an isobar connects points of equal atmospheric pressure, an isotherm connects points of equal temperature, and an isohaline connects points of equal salinity. Therefore, for areas with the same rainfall, "Isohyt" is the correct term.

Explanation

A light-year is a unit of distance, not time, used to express astronomical distances. It is defined as the distance that light travels in a vacuum in one Julian year (365.25 days). Light travels at an incredibly fast speed of approximately 300,000 kilometers per second. Therefore, option A correctly states that a light-year is the distance traveled by light in one year.

Explanation

Westerlies are prevailing winds that blow from west to east in the middle latitudes, specifically between 30° and 60° north and south of the equator. These winds originate from the high-pressure areas in the horse latitudes (around 30° latitude) and move towards the poles. The Coriolis effect, caused by Earth's rotation, deflects these poleward-moving winds eastward, giving them their westerly direction. Westerlies are a crucial part of global atmospheric circulation and significantly influence weather patterns in the mid-latitudes.

Explanation

The Benguela Current is a cold ocean current flowing northward along the west coast of southern Africa. This coldness is primarily due to coastal upwelling, where prevailing southerly and southwesterly winds drive surface waters away from the coast, allowing colder, nutrient-rich water from the ocean depths to rise to the surface. This upwelling cools the surface water significantly, making the Benguela Current a cold current. It is a crucial part of the South Atlantic Ocean gyre and contributes to the highly productive Benguela ecosystem.

Explanation

A Mediterranean climate is characterized by hot, dry summers and mild, wet winters. This climate type is typically found on the western sides of continents, between approximately 30 and 45 degrees latitude north and south of the Equator. California, particularly its coastal regions and much of the Central Valley, fits this description with its warm, dry summers and cool, wet winters. In contrast, Florida has a humid subtropical or tropical climate with hot, humid, and wet summers, and mild, wet winters. Central China experiences a temperate continental or subtropical climate with hot, rainy summers and colder winters with some rainfall. Hungary has a continental climate with warm, often rainy summers and cold, snowy winters.

Explanation

Coniferous forests, also known as taiga or boreal forests, are predominantly found in the Siberian climate. This climate is characterized by long, extremely cold winters with temperatures often dropping significantly below freezing, and short, cool to mild summers. The annual precipitation is relatively low, with much of it occurring as snow during the extended winter months. Conifers are well-adapted to these harsh conditions, possessing features like needle-shaped leaves to minimize water loss and a conical shape to shed snow effectively.

Explanation

An Astronomical Unit (AU) is a standard unit of length used in astronomy. It is defined as the average distance between the Earth and the Sun. This average is used because the Earth's orbit around the Sun is elliptical, meaning the distance varies throughout the year. Therefore, option A accurately describes one Astronomical Unit.

Explanation

India is primarily called a tropical country due to its latitudinal extent. The Tropic of Cancer passes almost through the middle of the country, dividing it into tropical and subtropical zones. However, the overall climate is dominated by tropical characteristics because a significant portion of India lies within the tropical zone, south of the Tropic of Cancer. This geographical positioning results in high temperatures throughout most of the year, a defining feature of tropical regions.

Explanation

The Western Ghats are a continuous chain of mountains running parallel to the western coast of India. Geologically, they are considered block mountains, formed by the faulted and uplifted edge of the Deccan Plateau during the breakup of the supercontinent Gondwana. While sometimes described as an escarpment due to their steep western slopes, their significant elevation, extensive length, and distinct peaks, such as Anamudi, firmly classify them as a mountain range. They play a crucial role in India's monsoon weather patterns and are recognized as a global biodiversity hotspot.

Explanation

Gully erosion is a severe form of soil erosion where concentrated runoff water cuts deep channels into the land, creating steep-sided valleys known as gullies. The Chambal ravines are a classic example of extensive gully erosion, where the soft alluvial soils along the Chambal River and its tributaries have been deeply incised by persistent water flow. This process carves out a complex network of deep, intricate channels and ridges, characteristic of the badland topography found in the Chambal basin. The significant depth and size of these erosional features distinguish them from the shallower forms of erosion like splash, sheet, or rill erosion. Therefore, gully erosion is directly responsible for the formation of the Chambal ravines.

Explanation

The Tulbul Project, also known as the Wular Barrage, is a navigation lock-cum-control structure located at the outlet of Wular Lake on the Jhelum River in Jammu and Kashmir. Its primary objective is to regulate the water flow of the Jhelum River to maintain sufficient depth for year-round navigation, especially during dry winter months. The project also aims to aid in flood control, sediment management, and enhance downstream hydroelectric power generation. Construction began in 1984 but was halted in 1987 due to objections from Pakistan, which cited violations of the Indus Waters Treaty.

Explanation

Laterite soils are predominantly found in the Malabar Coastal Region due to the specific climatic conditions prevalent there. These soils form in tropical and subtropical areas characterized by high temperatures and heavy rainfall, often with alternating wet and dry periods. The Malabar Coastal Region, particularly in Kerala, experiences intense southwest monsoon rainfall and high temperatures, which are ideal for the process of laterization. This prolonged chemical weathering leaches away soluble minerals, leaving behind a residue rich in iron and aluminum oxides, which gives laterite soils their characteristic reddish-brown color. A significant portion of the Western Ghats in Kerala is covered with laterite soil, making it a predominant soil type in the region.

Explanation

Madhya Pradesh is the leading producer of soybean in India, often referred to as the "Soybean State" or "Soya Pradesh" due to its significant contribution to the country's total soybean output. In the 2023-24 season, Madhya Pradesh regained its top position, surpassing Maharashtra, with a production of 5.47 million tonnes, accounting for 41.92% of the national total. The state's favorable climate and fertile soil provide ideal conditions for soybean cultivation. Commercial cultivation of soybean was introduced in Madhya Pradesh during the late seventies, leading to a remarkable increase in area, production, and yield over the decades.

Explanation

Madhya Pradesh is known as the 'Tiger State' because it consistently holds the largest tiger population in India. According to the 2022 Tiger Census, Madhya Pradesh was home to 785 tigers, the highest number in the country. The state's diverse landscapes, dense forests, and numerous well-managed national parks and wildlife sanctuaries, such as Kanha, Bandhavgarh, and Pench, provide an ideal habitat for these big cats. This significant tiger population and dedicated conservation efforts have earned Madhya Pradesh its esteemed title.

Explanation

Madhya Pradesh consistently holds the distinction of having the largest forest cover by area among all Indian states. According to the India State of Forest Report (ISFR) 2023, Madhya Pradesh has a forest cover of 77,073 sq km. This extensive forest area is crucial for biodiversity and wildlife conservation, housing diverse forest types and numerous national parks and wildlife sanctuaries. While other states like Arunachal Pradesh and Chhattisgarh also have significant forest cover, Madhya Pradesh leads in terms of total geographical area under forest.

Explanation

Sabarimala is a famous Hindu pilgrimage site located in the state of Kerala, India. It is situated on a hilltop within the dense forests of the Periyar Tiger Reserve in the Pathanamthitta district. The temple is dedicated to Lord Ayyappan and is one of the largest annual pilgrimage sites globally, attracting millions of devotees each year.

Explanation

The Sahyadri Range is another name for the Western Ghats. This mountain range stretches along the western coast of the Indian peninsula, traversing states like Gujarat, Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu. The term "Sahyadri" is particularly used for the northern part of the Western Ghats, especially in Maharashtra. The Western Ghats are recognized globally as a biodiversity hotspot.

Explanation

Jharia is renowned for its extensive deposits of high-quality coking coal, which is considered the best for cooking purposes due to its suitability for producing coke used in blast furnaces. It is recognized as India's most important source and sole repository of prime coking coal. In contrast, Raniganj primarily produces non-coking coal, suitable for thermal power generation, with only limited coking applications. Neyveli is known for its lignite reserves, which is a low-grade brown coal mainly used for electricity generation. Similarly, Singrauli's coal is exclusively non-coking and is primarily used for thermal power generation.

Explanation

The Aravalli Hills are recognized as the oldest mountain range in India, with their geological history dating back to the Paleoproterozoic era, approximately 2.5 billion years ago. These ancient fold mountains are significantly older than the Himalayas, which began forming around 40-50 million years ago due to tectonic plate collisions. While the Vindhyas are also ancient, estimated to be about 650 million to 1.7 billion years old, the Aravallis predate them. The Nilgiris, part of the Western Ghats, contain some old rock formations but are not considered the oldest mountain range as a whole. The Aravallis represent an eroded remnant of a much larger and older mountain system.

Explanation

The Sardar Sarovar Project is a massive concrete gravity dam constructed on the Narmada River. It is located near Kevadiya in the Narmada District of Gujarat, India. The project is a key component of the Narmada Valley Project, which aims to provide irrigation, hydroelectric power, and drinking water to several Indian states, including Gujarat, Madhya Pradesh, Maharashtra, and Rajasthan. The Narmada River is the largest west-flowing river in peninsular India, originating from Amarkantak in Madhya Pradesh.

Explanation

The Forest Research Institute (FRI) is a renowned institution in India dedicated to forestry research and education. It is located in Dehradun, Uttarakhand, and is one of the oldest institutions of its kind, established in 1906 as the Imperial Forest Research Institute. The institute plays a crucial role in training Indian Forest Service cadres and conducting extensive research in various aspects of forestry. Its sprawling campus and impressive Greco-Roman and Colonial architecture also make it a significant landmark and tourist attraction in Dehradun.

Explanation

Santos, a port city in southeastern Brazil, is renowned as the 'Coffee port of the world' due to its historical and ongoing significance in the global coffee trade. It became prominent as the world's leading coffee-exporting port when Brazil emerged as the top global producer of coffee. At its peak, the Port of Santos handled over 80% of Brazil's coffee production, and in 2024, it accounted for 71% of the value of national coffee exports. The city's strategic location and well-developed harbor facilities have made it the primary gateway for Brazilian coffee to the international market. The aroma of coffee is said to permeate the city, and it even houses a Coffee Museum, reflecting its deep connection to the industry.

Explanation

The North Atlantic Ocean route is considered the busiest ocean route globally because it connects two of the world's most industrially developed and densely populated regions: Western Europe and Eastern North America. This route facilitates a tremendous volume of foreign trade, carrying a significant portion of global commerce. Both coasts along this route are equipped with highly advanced ports and harbor facilities, further enhancing its importance for international shipping.

Explanation

The refractive index of glass with respect to water (μ_g) can be found by dividing the absolute refractive index of glass (μ_g) by the absolute refractive index of water (μ_w). Given μ_g = 3/2 and μ_w = 4/3, we calculate μ_g = (3/2) / (4/3). This simplifies to (3/2) * (3/4), which equals 9/8. Therefore, option A is the correct answer.

Explanation

Australia is widely recognized as the world's largest producer and exporter of wool, particularly fine Merino wool. The country's vast rangelands and favorable climate support a massive sheep industry, with a significant portion of the global sheep population. Australian wool is highly prized for its quality and is a dominant force in the international textile market. This strong production and export capacity firmly establish Australia as a leader in the global wool industry.

Explanation

S.K. Roongta is primarily concerned with SAIL (Steel Authority of India Ltd.). He served as the Chairman of SAIL from August 2006 to May 2010. Prior to becoming Chairman, he began his career at SAIL in 1972 as a marketing executive and held various key positions within the company, including Director (Commercial) and Director (Personnel). Under his leadership, SAIL achieved significant milestones in production and financial performance.

Explanation

Wockhardt is an Indian pharmaceutical and biotechnology company. It is primarily engaged in the manufacture and marketing of pharmaceutical and biopharmaceutical formulations, as well as the development of active pharmaceutical ingredients (APIs). The company produces a wide range of medicines, including pain relievers, blood pressure drugs, and vaccines. Wockhardt has manufacturing facilities and a global presence, providing high-quality medicines worldwide.

Explanation

Navaratna status is a classification awarded by the Government of India to select Central Public Sector Enterprises (CPSEs) that have demonstrated strong financial performance and operational efficiency. These companies are government-owned entities, with at least 51% of their stake held by the Government of India or state governments. The status grants them greater financial and operational autonomy, allowing them to make significant investments and strategic decisions without requiring prior government approval up to a certain limit. This empowerment aims to help these public sector companies compete more effectively in the global market.

Explanation

Sensex, which is short for S&P BSE Sensex, is a benchmark stock market index of the Bombay Stock Exchange (BSE) in India. It comprises 30 of the largest, most actively traded, and financially sound companies listed on the BSE. These 30 constituent companies are carefully selected to represent various industrial sectors of the Indian economy. The Sensex is calculated using the free-float market capitalization method and serves as a key indicator of the overall performance and health of the Indian stock market.

Explanation

The Foreign Direct Investment (FDI) limit in the insurance sector was increased to 49 percent in 2015. This was a significant step in liberalizing the Indian insurance market, allowing greater foreign participation. Prior to this, the FDI limit stood at 26 percent. The increase to 49 percent aimed to attract more capital and expertise into the sector, fostering growth and competition. While the FDI limit has since been further raised to 74 percent in 2021 and then to 100 percent in 2026, 49 percent represented a crucial "proposal level" at a specific point in the evolution of India's insurance policy.

Explanation

The Mid-day Meal Scheme (now PM POSHAN) primarily aims to enhance the nutritional status of school-aged children, encourage school enrollment and attendance, and promote social equity by breaking down caste and class barriers. It addresses classroom hunger and improves learning outcomes by providing free, nutritious meals. While the scheme utilizes food, its core objectives are not directly related to increasing agricultural productivity. Instead, it focuses on child welfare, education, and social inclusion.

Explanation

According to the Periodic Labour Force Survey (PLFS) 2023-24, India's overall literacy rate for persons aged seven years and above is 80.9%. Andhra Pradesh recorded a literacy rate of 72.6% in the same survey, making it the state with the lowest literacy rate among the options provided and below the national average. In contrast, Karnataka's literacy rate was 82.7%, West Bengal's was 82.6% (as per a 2023-2024 survey), and Maharashtra's was 87.3% (PLFS 2023-24), all of which are higher than the national average. Therefore, Andhra Pradesh is the correct answer as its literacy rate falls below the national average.

Explanation

Joule is the SI unit of energy. In the same way, Pascal is the SI unit of pressure. Both pairs represent a physical quantity and its corresponding standard international unit of measurement. Therefore, Pascal is related to Pressure.

Explanation

When a burning matchstick is brought near hydrogen gas, the matchstick itself extinguishes because hydrogen does not support combustion of the wood. However, hydrogen gas is highly flammable and readily reacts with oxygen in the air. This rapid combustion of hydrogen produces a distinctive 'pop' sound due to the quick expansion of hot gases and the formation of water. This characteristic 'pop' sound is a common test for the presence of hydrogen gas.

Explanation

The principal axis is an imaginary straight line that passes through the pole and the center of curvature of a spherical mirror. The pole is the geometric center of the mirror's surface, and the principal focus (or simply focus) is a point on this axis where parallel rays of light converge or appear to diverge after reflection. Therefore, any imaginary line connecting the focus and the pole of a spherical mirror is by definition the principal axis. Focal length is the distance between the pole and the principal focus, while aperture refers to the effective diameter of the mirror.

Explanation

When an object is placed at the focus of a concave mirror, the light rays originating from the object travel parallel to the principal axis after reflection. These reflected rays are parallel to each other and never converge to form a real image at a finite distance. Therefore, the image is said to be formed at infinity. This principle is utilized in devices like searchlights and car headlights to produce a parallel beam of light.

Explanation

An air bubble inside water behaves like a concave lens because of the difference in refractive indices between air and water. Water has a higher refractive index (approximately 1.333) than air (approximately 1.0003). When light rays from the denser medium (water) enter the rarer medium (air) of the bubble, they bend away from the normal. This causes the light rays to diverge, which is the characteristic behavior of a concave or diverging lens. Therefore, despite its convex physical shape, the air bubble optically functions as a concave lens.

Explanation

A fan is composed of blades, which are its essential functional parts. In the same way, a wheel is composed of spokes, which are the essential components connecting the hub to the rim. Spokes are integral to the structure and function of many types of wheels. Therefore, the relationship between a fan and its blades is analogous to the relationship between a wheel and its spokes.

Explanation

Electric current is defined as the rate at which electric charge flows through a conductor. It quantifies the amount of charge that passes a given point in a circuit per unit of time. Therefore, the formula for electric current (I) is the electric charge (Q) divided by the time (t), or I = Q/t. This relationship indicates that a larger current means more charge is flowing in a shorter amount of time.

Explanation

Specific gravity is a dimensionless quantity, defined as the ratio of the density of a substance to the density of a reference substance, usually water at a specific temperature. Since it is a ratio of two densities, the units of density in the numerator and denominator cancel each other out. This cancellation means that specific gravity has no units, and consequently, its numerical value remains the same regardless of the system of units (e.g., SI, CGS, or imperial) used for measurement. In contrast, quantities like acceleration due to gravity, pressure, and density all have units that change depending on the system of units employed.

Explanation

Zinc is an amphoteric metal, meaning it can react with both acids and alkalis. When zinc reacts with an acid, such as hydrochloric acid, it displaces hydrogen to form a zinc salt and hydrogen gas. For example, Zn + 2HCl → ZnCl₂ + H₂. Similarly, when zinc reacts with a strong alkali, like sodium hydroxide, it forms a zincate complex and liberates hydrogen gas. An example of this reaction is Zn + 2NaOH → Na₂ZnO₂ + H₂. This dual reactivity with both acids and bases to produce hydrogen gas is a characteristic property of amphoteric metals like zinc.

Explanation

Ammonium chloride (NH4Cl) is a salt formed from a strong acid, hydrochloric acid (HCl), and a weak base, ammonium hydroxide (NH4OH). When ammonium chloride dissolves in water, it dissociates into ammonium ions (NH4+) and chloride ions (Cl-). The ammonium ion, being the conjugate acid of a weak base, undergoes hydrolysis with water. This hydrolysis reaction produces hydronium ions (H3O+) or hydrogen ions (H+), which increases the acidity of the solution. The chloride ion, being the conjugate base of a strong acid, does not hydrolyze significantly.

Explanation

Chromium is the essential metal alloyed with iron to produce stainless steel. It is responsible for stainless steel's characteristic resistance to rust and corrosion. When chromium is exposed to oxygen, it forms a thin, passive layer of chromium oxide on the steel's surface. This protective film acts as a barrier, preventing further oxidation and corrosion of the underlying metal. Stainless steel must contain at least 10.5% chromium to achieve this corrosion resistance.

Explanation

Radon is a radioactive noble gas with a very short half-life. Due to its rapid decay, it does not accumulate in the atmosphere in significant quantities. The other noble gases listed, Argon, Krypton, and Xenon, are stable and are present in the Earth's atmosphere. Therefore, Radon is the noble gas among the options that is not found in the atmosphere.

Explanation

Carbon dioxide (CO2), an oxide of carbon, is widely used as a coolant, particularly in its solid form known as dry ice. Dry ice sublimes directly from a solid to a gas at -78.5 °C, absorbing a significant amount of heat from its surroundings during this process. This property makes it an effective cooling agent that leaves no liquid residue, which is advantageous in applications like food preservation and medical transport. Additionally, CO2 is utilized as a refrigerant in various cooling and heating systems due to its excellent heat transfer properties, non-flammability, and non-toxicity. It is also considered an environmentally friendly alternative to synthetic refrigerants.

Explanation

Gram and other pulses belong to the legume family of plants. These plants have a unique symbiotic relationship with specific bacteria, primarily Rhizobium, which reside in nodules on their roots. These bacteria convert atmospheric nitrogen into ammonia, a form usable by the plant, through a process called nitrogen fixation. This process enriches the soil with nitrogen, making legumes valuable for crop rotation and soil fertility.

Explanation

Regeneration, budding, and fission are all forms of asexual reproduction, where a single parent organism produces offspring that are genetically identical to itself without the involvement of specialized reproductive cells. Gametes, however, are specialized reproductive cells (sperm and egg) that are essential for sexual reproduction. In sexual reproduction, two gametes fuse during fertilization to form a zygote, leading to offspring with genetic material from both parents. Therefore, gametes are the odd one out as they are associated with sexual reproduction, unlike the other options which describe asexual reproduction methods.

Explanation

The National Forest Policy of India, particularly the 1988 policy, mandates that a minimum of 33% of the total geographical area of the country should be under forest and tree cover to maintain ecological balance. This percentage is considered ideal for environmental stability, preventing natural disasters like irregular rain, floods, and soil erosion. While the overall target is 33%, the policy also suggests that in hilly and mountainous regions, the forest cover should ideally be up to 67% due to their ecological sensitivity. Therefore, for the plains, the minimum forest cover to maintain ecological balance is 33%.

Explanation

A surge of luteinizing hormone (LH) is the primary trigger for ovulation in human females. This LH surge causes the mature follicle to rupture and release the egg. It also initiates the transformation of the ruptured follicle into the corpus luteum, which then produces progesterone. While estrogen and follicle-stimulating hormone (FSH) are crucial earlier in the cycle for follicle development, it is the dramatic increase in LH that directly stimulates ovulation. Progesterone levels rise significantly after ovulation.

Explanation

Lobsters are marine arthropods characterized by their hard exoskeletons, segmented bodies, and ten legs, including a pair of large claws. These features are defining characteristics of the class Crustacea. Crustaceans are a large group of arthropods that also includes crabs, shrimp, and barnacles, all sharing similar anatomical traits like a chitinous exoskeleton and biramous (two-branched) appendages. Arachnids, insects, and myriapods are other classes within the phylum Arthropoda, but they possess distinct characteristics that differentiate them from crustaceans.

Explanation

Prolog, a logic programming language, was developed around 1972 by Alain Colmerauer and Philippe Roussel at the University of Aix-Marseille in France. Robert Kowalski also made significant theoretical contributions to its design. The first Prolog interpreter was built by Roussel in 1972. Most sources refer to 1972 as the birthdate of Prolog.Prolog, a logic programming language, was developed around 1972 by Alain Colmerauer and Philippe Roussel at the University of Aix-Marseille in France. Robert Kowalski also made significant theoretical contributions to its design. The first Prolog interpreter was built by Roussel in 1972. Most sources refer to 1972 as the birthdate of Prolog.

Explanation

A backbone, in the context of computer networks, refers to a central high-capacity communication link that connects various smaller networks and carries a significant amount of data traffic. These high-speed data transmission lines are essential for the global infrastructure of the Internet. The Internet relies on a complex system of interconnected backbones to facilitate the rapid exchange of information across vast distances. Therefore, the backbone is fundamentally connected with the Internet, serving as its primary infrastructure for data transfer.

Explanation

The Advanced Research Projects Agency (ARPA), later known as DARPA, was responsible for the development of ARPANET, which served as the precursor to the modern Internet. Established in 1958 by the U.S. Department of Defense, ARPA's initial goal was to prevent technological surprises and advance American military technology. The ARPANET project, initiated in the 1960s, aimed to create a robust and decentralized communication network that could withstand attacks and facilitate information sharing among research institutions. Key innovations like packet switching and the development of the TCP/IP protocol suite, pioneered through ARPANET, became the fundamental technical foundation of the Internet we use today.

Explanation

The World Wide Web was invented by British computer scientist Tim Berners-Lee in 1989. He developed it while working at CERN (the European Organization for Nuclear Research), which is located near Geneva, Switzerland. Berners-Lee's aim was to create a system for automated information-sharing among scientists. Therefore, the origin of the Web is attributed to Switzerland.

Explanation

A leased connection is considered a Level two connection because it primarily operates at the Data Link Layer (Layer 2) of the OSI model. This layer is responsible for providing a reliable point-to-point connection between two endpoints. Leased lines offer dedicated, private, high-speed data paths, often functioning as a flat, point-to-point Ethernet link. This allows for predictable performance and secure data transfer between specific locations.

Explanation

Browsers are software applications that allow users to access and view information on the World Wide Web. To effectively use a browser, individuals need to be able to read and understand the text displayed on web pages, navigate menus, and input information such as website addresses or search queries. This fundamental interaction with text and visual cues necessitates a degree of literacy. While both technical and non-technical individuals use browsers, and they are designed for ease of use without memorizing commands, the core requirement for interaction remains literacy.

Explanation

E-commerce typically requires seven key components to operate successfully. These components include ensuring product quality to build customer trust and encourage repeat purchases. Effective customer interaction, often through a well-designed website, is crucial for converting potential buyers into loyal customers. Reliable and responsive customer support is essential for addressing inquiries and resolving issues. Standardized product pricing helps maintain consistency and builds customer confidence. Timely deliveries are vital for customer satisfaction and positive experiences. Safeguarding the store's security protects sensitive customer information and builds trust. Finally, leveraging the power of social media is important for promotion, visibility, engagement, and driving conversions.

Explanation

Dow Jones is not a search engine; it is primarily known as a stock market index, the Dow Jones Industrial Average (DJIA), which tracks the performance of 30 prominent U.S. companies. It is also the name of a publishing firm that produces financial news publications like The Wall Street Journal. In contrast, Yahoo, Lycos, and Meta Grawler are all types of search engines. Yahoo Search is a search engine that, since 2009, has used Microsoft Bing to generate its results. Lycos is a web search engine and web portal established in 1994. Meta Grawler (also known as MetaCrawler) is a metasearch engine that aggregates results from multiple search engines simultaneously.

Explanation

The broad classification of video conferencing systems consists of two main types: point-to-point and multi-point. Point-to-point video conferencing systems allow two individuals in different locations to communicate and interact directly. In contrast, multi-point conferencing systems are designed for communication and collaboration among three or more participants located in separate areas. These two classifications serve distinct purposes in facilitating virtual communication.

Explanation

'Vaccine' software, often referred to as antivirus software, is specifically designed to protect computer systems from malicious programs. Its primary function is to detect, prevent, and remove computer viruses and other forms of malware. This software scans files and monitors system behavior to identify and neutralize threats that could otherwise damage data or disrupt operations. Therefore, it is used to control virus defects.

Explanation

NeuroNER is an easy-to-use program for named-entity recognition (NER) that is based on neural networks. It is designed to integrate smoothly with web-based annotation tools like BRAT, allowing users to create or improve annotations online. Furthermore, NeuroNER leverages web applications such as TensorBoard for real-time monitoring of the training process. Its functionality and integration with web-based platforms make "Online" the correct answer, as it is fundamentally an online or digital tool for text analysis.

Explanation

The given statements establish that Ramesh is taller than Ajay, and Vijay is taller than both Suresh and Ramesh. This means we have the order Vijay > Ramesh > Ajay. We also know Vijay > Suresh. However, there is no information provided to compare Suresh's height with Ajay's height. Suresh could be taller than Ajay, shorter than Ajay, or the same height as Ajay. Therefore, without additional information, it is impossible to definitively determine who is the shortest among them.

Explanation

C-band is a portion of the electromagnetic spectrum used for various communication purposes, most notably satellite communication. In satellite communication, C-band typically utilizes different frequency ranges for uplink (Earth-to-space) and downlink (space-to-Earth) transmissions. The standard uplink frequencies for C-band range from 5.925 to 6.425 GHz. Therefore, 6 GHz falls within the C-band's uplink transmission range.

Explanation

Gopher is a communication protocol designed for distributing, searching, and retrieving documents in Internet Protocol networks. It presents information in a hierarchical, menu-driven format, much like a file system. Users navigate through these menus to find and access specific text files or other resources. This structured approach makes Gopher particularly useful for locating information by browsing through organized directories.

Explanation

A computer server is essential for hosting online services, providing the infrastructure for websites, applications, and data accessible over a network. America Online (AOL) and Prodigy were both pioneering consumer-oriented online service providers in the early days of the internet, offering dial-up access, email, news, and other content to subscribers. In contrast, "Sam system" most commonly refers to either Software Asset Management (SAM), which is an internal business practice for managing software licenses, or the System for Award Management (SAM.gov), a U.S. government website for federal contracting and awards. Neither of these is a general online service for public consumption in the same way as AOL or Prodigy.

Explanation

Sidhi is known as the energy capital of Madhya Pradesh because the region, particularly the area that is now Singrauli district, possesses vast coal reserves and numerous thermal power plants. Singrauli, often referred to as the "Energy Capital of Madhya Pradesh" and even "Energy Capital of India," was carved out of Sidhi district in 2008. The concentration of coal mining and power generation facilities in this belt, historically part of Sidhi, makes it a crucial hub for electricity production for the state and beyond. This abundance of mineral resources and power plants contributes significantly to the energy sector, earning the region its title.

Explanation

G.L. Yadav is the correct answer because he is an Arjuna Awardee in the field of yachting and belongs to Madhya Pradesh. He received the prestigious Arjuna Award in 2009 for his achievements in yachting. Yadav is recognized for his significant contributions to the sport and for representing Madhya Pradesh. Other options like Shivendra Singh are Arjuna Awardees, but in different sports such as hockey.

Explanation

The Omkareshwar hydro-electric power project, located on the Narmada River in Madhya Pradesh, India, has an installed capacity of 520 MW. This project, commissioned in 2007, utilizes eight vertical Francis turbines, each with a capacity of 65 MW, to generate clean electricity. The dam and its associated power plant are significant contributors to India's renewable energy efforts. While there is also a separate 600 MW floating solar park at the Omkareshwar Dam, the hydroelectric component specifically generates 520 MW.

Explanation

Madhya Pradesh has an area of 308,252 square kilometers, making it the second-largest state in India by area. This figure is consistently reported by various sources, including Britannica. Therefore, option C, 308252 sq.km., is the correct answer. Some sources also mention the area as 308,245 sq.km., which is a minor difference.

Explanation

The Integrated Child Development Services (ICDS) scheme underwent a significant expansion and universalization during the 2008-09 period. As part of this nationwide effort to extend child development services to all eligible areas, 86 new child development projects were sanctioned in Madhya Pradesh in the year 2009. This expansion aimed to enhance the reach and effectiveness of the ICDS program within the state.

Explanation

Alirajpur is recognized for its significant tribal population and the government's focus on tribal welfare and development in the region. The establishment of specialized institutions like a tribal sports school in Alirajpur aims to nurture athletic talent among the tribal youth. This initiative provides opportunities for tribal students to excel in sports and integrate into mainstream society. Therefore, Alirajpur is the correct location for the only tribal sports school in Madhya Pradesh.

Explanation

Malkhamb is indeed the state sport of Madhya Pradesh. The government of Madhya Pradesh officially declared Malkhamb as its state sport on April 9, 2013, to promote and preserve this traditional Indian sport. Malkhamb is a traditional Indian gymnastic sport where practitioners perform various aerial yoga and gymnastic postures, often with wrestling grips, on a vertical wooden pole or a rope. This declaration aimed to encourage participation and development of Malkhamb within the state.

Explanation

Madhya Pradesh had 50 districts for a period following the creation of Alirajpur and Singrauli districts in 2008. These additions brought the total number of districts to 50. This count remained consistent until further administrative reorganizations led to the formation of new districts in subsequent years. Therefore, 50 was the correct number of districts at a specific point in the state's administrative history.

Explanation

According to the 2011 Census, Harda is the lowest populated district in Madhya Pradesh. Its total population was recorded as 570,465 people. In comparison, Dindori had a population of 704,524, Umaria had 644,758, and Dhar had 2,185,793 residents. This makes Harda the district with the smallest population among the given options.

Explanation

The cement factory located at Satna was established by Birla Corporation. Birla Corporation Limited, a part of the M.P. Birla Group, has a long-standing presence in the cement industry, and its Satna plant is one of its oldest, commissioned in 1959. The M.P. Birla Group was founded by Ghanshyam Das Birla, who established the iconic MP Birla cement factory in Satna. Satna is one of the key locations for Birla Corporation's cement manufacturing operations.

Explanation

Amarkantak is a pilgrim town and Nagar Panchayat located in the Anuppur district of Madhya Pradesh, India. It is renowned as the origin of two significant rivers, the Narmada and the Son. The town is situated at the confluence of the Vindhya and Satpura mountain ranges, with the Maikal Hills forming a central point. This makes it a unique natural heritage area and an important pilgrimage site within the state of Madhya Pradesh.

Explanation

The Chachai Waterfall is located in the Rewa district of Madhya Pradesh, India. It is situated approximately 40-46 kilometers north of Rewa city. The waterfall is formed by the Beehad River, a tributary of the Tamsa or Tons River, as it descends from the Rewa Plateau. Chachai Falls is recognized as the second-highest waterfall in Madhya Pradesh and among the highest single-drop waterfalls in India.

Explanation

Jabalpur is home to the Jawaharlal Nehru Krishi Vishwa Vidyalaya (JNKVV), a prominent state agricultural university. Established on October 1, 1964, by the Government of Madhya Pradesh, JNKVV is dedicated to agricultural education, research, and extension services. It offers various undergraduate, postgraduate, and doctoral programs in agriculture and allied sciences. The university plays a crucial role in advancing Madhya Pradesh's agricultural landscape and promoting sustainable practices.

Explanation

Vehicle Factory Jabalpur (VFJ) is a military motor vehicle factory situated in Jabalpur, Madhya Pradesh, India. It is part of Armoured Vehicles Nigam Limited, previously under the Ordnance Factory Board, and is controlled by the Ministry of Defence, Government of India. The factory manufactures and assembles various defence vehicles, including general staff vehicles, logistics vehicles, and light armoured vehicles. Jabalpur is also home to other defence establishments, such as the Gun Carriage Factory Jabalpur.

Explanation

Jamuna Devi was a prominent leader of the Indian National Congress party in Madhya Pradesh. She served as the Leader of Opposition in the Madhya Pradesh Legislative Assembly, holding the position from 2003 and receiving a second term in January 2009. She remained in this role until her passing on September 24, 2010. Prior to this, she also held the significant office of Deputy Chief Minister of Madhya Pradesh.

Explanation

Madhya Pradesh Bhoj Open University, commonly known as M.P. Open University, is situated in Bhopal, the capital city of Madhya Pradesh, India. Established in 1991, it is a public university primarily focused on providing higher education through open and distance learning. The university's main campus is located on Kolar Road in Bhopal. This makes Bhopal the correct answer for its location.

Explanation

Rani Durgawati was the Queen of the Gondwana kingdom, which encompassed parts of present-day Madhya Pradesh, with Jabalpur serving as a significant administrative and cultural center within her realm. Her capital was initially Singorgarh, which was near modern Jabalpur, and she later moved it to Chauragarh fort. Many memorials and institutions in and around Jabalpur are named after her, including Rani Durgavati Vishwavidyalaya (Jabalpur University), highlighting her enduring legacy in the area. She is also remembered for public works in the region, such as constructing reservoirs like Ranital, Cherital, and Adhartal near Jabalpur.

Explanation

The urban population of Madhya Pradesh, as per the 2011 Census, was 20,069,405 people. This figure is approximately 2.006 crores. Among the given options, 1.60 crores is the closest approximation to the urban population of Madhya Pradesh as per the last census survey. The urban population constituted 27.63% of the total population of the state in 2011.

Explanation

The density of population of Madhya Pradesh was 196 persons per square kilometer according to the 2001 Census. This figure increased to 236 persons per square kilometer in the subsequent 2011 Census. Therefore, option B is correct based on the 2001 Census data.

Explanation

The literacy rate of Madhya Pradesh was 63.7 percent as per the 2001 Census. This figure represents the percentage of literate individuals in the state at that time. While the literacy rate increased to approximately 69.3 percent in the subsequent 2011 Census, the option of 63.7 percent corresponds to the 2001 census data. Therefore, among the given choices, 63.7 percent is the correct answer, likely referring to the 2001 census survey.

Explanation

As per the 2001 Census, the sex ratio of Madhya Pradesh was 919 females per 1000 males. This figure represents the number of females for every 1000 males in the state at that time. While the sex ratio improved to 931 females per 1000 males in the subsequent 2011 Census, the option A correctly reflects the sex ratio from the 2001 survey.

Explanation

Sagar was recently in the news due to Dr. Harisingh Gour University, which is a Central University located in the city. The university has been mentioned in recent news for various reasons, including student-related incidents and legal matters concerning appointments. For instance, in February 2026, there were reports of students being attacked at the Central University in Sagar. Additionally, in August 2025, the Madhya Pradesh High Court imposed a cost on the university regarding "utterly illegal and arbitrary" appointments of assistant professors. Furthermore, in February 2024, the university signed a Memorandum of Understanding (MoU) with the Central University of Himachal Pradesh for collaboration in research, academics, and skill development.

Explanation

The Central Region Council of the Sports Authority of India (SAI) is located in Bhopal. Bhopal is home to the SAI Udhav Das Mehta Bhaiji Central Centre, which serves as one of the regional hubs for the promotion and development of sports in the country. The Sports Authority of India has several regional centers across India to implement its sports promotional schemes and nurture athletic talent.

Explanation

The Amarnath cave is located at an altitude of approximately 3,888 meters (12,756 feet) above sea level in the Himalayas. Some sources also state it is around 4,000 meters high. Option A, 4054 m, is the closest value to the widely accepted height of the Amarnath cave among the given choices.

Explanation

Justice P.V. Reddy, a former Supreme Court judge, served as the Chairman of the 19th Law Commission of India. He was appointed to this position in March 2010. The 19th Law Commission was constituted for a three-year term from September 1, 2009, to August 31, 2012. During his tenure, the commission provided legal advice to the government on various complex legal issues. Therefore, P.V. Reddy was indeed the Chairman of the Law Commission of India during that period.

Explanation

Sir Rajeev Chandrasekhar is associated with FICCI because he served as the youngest President of the Federation of Indian Chambers of Commerce and Industry (FICCI) during 2008-2009. FICCI is India's apex industry chamber. During his tenure, he strongly advocated for governance reforms and initiated a series of seminars on the topic.

Explanation

Wen Jiabao served as the Premier of the People's Republic of China from 2003 to 2013. During this period, he was the head of government and responsible for managing the economy. Hu Jintao, while a prominent Chinese leader during a similar timeframe, held the positions of General Secretary of the Chinese Communist Party and President of China, not Prime Minister. The names Mu Fuindai and Chou Sonio do not correspond to recognized Prime Ministers or significant political figures of China.

Explanation

Dr. D. Subbarao is primarily associated with banking due to his distinguished tenure as the 22nd Governor of the Reserve Bank of India (RBI) for five years, from 2008 to 2013. In this role, he was instrumental in steering the Indian economy through the global financial crisis. Prior to this, he also held significant positions such as Finance Secretary to the Government of India. While he has held other public service roles and academic fellowships, his most prominent and defining professional identity is linked to central banking.

Explanation

India has produced two champions who have brought home the world chess titles. Viswanathan Anand was the first Indian to become a World Chess Champion, achieving the title in 2000 and defending it for over a decade. More recently, Gukesh Dommaraju made history in December 2024 by becoming the youngest-ever World Chess Champion. Therefore, the correct option is D) None of these, as the actual number of Indian world chess champions is two.

Explanation

The third Commonwealth Youth Games, held in Pune, India, from October 12 to 18, 2008, saw the participation of 71 nations and territories. Over 1,300 athletes and 350 officials from these countries competed in nine sports during the event. This marked the first time the Commonwealth Youth Games were hosted in Asia.

Explanation

M.S. Gill served as the Union Minister for Youth Affairs and Sports from April 2008 to January 2011. The Union Minister of Youth Affairs and Sports is typically the ex-officio Chairman of the Sports Authority of India (SAI). Therefore, during his tenure as the Minister, M.S. Gill would have held the position of Chairman of the Sports Authority of India. This makes option B the correct answer, referring to a specific period in the past.

Explanation

Farveez Maharoof is a former professional cricketer who represented Sri Lanka in Tests, One Day Internationals (ODIs), and Twenty20 Internationals (T20Is) from 2004 to 2016. Born in Colombo, Sri Lanka, he was an all-rounder known for his right-arm fast-medium bowling and right-handed batting. He captained the Sri Lankan team in the 2004 Under-19 Cricket World Cup and was part of the squad that finished as runners-up in the 2007 Cricket World Cup.

Explanation

Rest of India was the winner of the Irani Trophy in the 2008-09 season. The match was played from September 24-28, 2008, at the Reliance Stadium in Vadodara. Rest of India defeated Delhi by 187 runs to claim the trophy. This victory marked their 20th Irani Trophy title.

Explanation

Rahman Rahi, a distinguished Kashmiri poet, translator, and critic, was the recipient of the 40th Jnanpith Award. This esteemed award, considered India's highest literary honor, was presented to him in 2008 by then Prime Minister Dr. Manmohan Singh. Rahi was recognized for his profound contributions to Kashmiri literature, particularly for his poetic collection "Siyah Roodeh Jaeren Manz" (In Black Drizzle). He holds the distinction of being the first Kashmiri writer to receive the Jnanpith Award.

Explanation

The period of 2010-2019 was observed as the science literacy decade across India. This initiative aimed to promote scientific temper and understanding among the general public. While specific details about the declaration of this decade are not readily available in the search results, the broader context indicates a continuous effort in India to improve science communication and literacy. Experts have highlighted the need for national-level surveys and targeted programs to enhance scientific literacy, especially given that India's scientific literacy levels are considered below international standards.

Explanation

DuPont, officially known as DuPont de Nemours, Inc., is an American multinational chemical company. It was founded in 1802 by Éleuthère Irénée du Pont in Wilmington, Delaware, where its headquarters remain today. The company has a long history of developing various chemicals and polymers and operates globally, but its base is in the U.S.A.

Explanation

Warren Buffett is widely recognized as one of the most successful investors in history. He built his immense wealth through strategic investments and is the chairman and former CEO of Berkshire Hathaway, a multinational conglomerate holding company. His career has been dedicated to analyzing businesses and making long-term investments, a philosophy he learned from Benjamin Graham, the father of value investing. Buffett's success in the stock market and his disciplined investment strategy have earned him the moniker "Oracle of Omaha."

Explanation

The Philadelphia Inquirer is a daily newspaper headquartered in Philadelphia, Pennsylvania. It was founded in 1829 and is one of the oldest continuously operating daily newspapers in the United States. The Inquirer serves the Philadelphia metropolitan area and has won numerous Pulitzer Prizes for its journalism.

Explanation

World Environment Day is observed annually on June 5th. This date was designated by the United Nations General Assembly in 1972, marking the first day of the Stockholm Conference on the Human Environment. The first World Environment Day was celebrated in 1973. The day serves as a global platform to raise awareness and encourage action for the protection of our environment.

Explanation

"Sea of Poppies" is a highly acclaimed novel written by Indian author Amitav Ghosh. Published in 2008, it was shortlisted for the Man Booker Prize. The book is the first installment of the "Ibis trilogy," a historical fiction series set in the 19th century, exploring the opium trade and its impact on India and China, leading up to the Opium Wars. Ghosh is known for his ambitious novels that delve into themes of national and personal identity, colonialism, and historical events.

Explanation

Denmark's official currency is the Danish Krone (DKK), often abbreviated as "kr.". The word "krone" means "crown" in Danish, and it has been the currency of Denmark since January 1875. While France uses the Euro, both Sweden and Norway also use currencies called "krona" or "krone" (Swedish Krona (SEK) and Norwegian Krone (NOK) respectively), due to their historical participation in the Scandinavian Monetary Union.

Explanation

Kosovo declared its independence from Serbia on February 17, 2008. While its recognition is not universal, with Serbia and some other nations not acknowledging its sovereignty, it has gained diplomatic recognition from a majority of United Nations member states. The designation of Kosovo as the 196th independent country often arises in lists that count the 193 UN member states, the two UN observer states (Palestine and Vatican City), and Kosovo. This inclusive count reflects its de facto independence and significant international recognition.

Explanation

The atomic bomb, nicknamed "Little Boy," was dropped on Hiroshima, Japan, on August 6, 1945, at 8:15 AM local time during the final days of World War II. This devastating act was carried out by the American B-29 bomber Enola Gay. The bombing resulted in immense destruction and a catastrophic loss of life, with an estimated 140,000 deaths by the end of 1945 in Hiroshima alone. Three days later, a second atomic bomb, "Fat Man," was dropped on Nagasaki.

Explanation

The Earth completes one full rotation of 360 degrees in approximately 24 hours. To determine the longitudinal distance for a one-hour time difference, divide the total degrees of longitude by the total hours in a day. Therefore, 360 degrees / 24 hours equals 15 degrees per hour. This means that for every 15 degrees of longitude, there is a one-hour time difference.

Explanation

Paul Krugman is a renowned American economist. He is a Distinguished Professor of Economics at the Graduate Center of the City University of New York and was a long-time columnist for The New York Times. Krugman was awarded the Nobel Memorial Prize in Economic Sciences in 2008 for his significant contributions to new trade theory and new economic geography. His academic work focuses on international economics, including trade theory, international finance, and economic geography. He has authored numerous scholarly articles and books on economic topics, making him one of the most influential economists globally.

Explanation

Dabbawalas are a renowned lunchbox delivery and return system that originated and primarily operates in Mumbai, India. This unique service, which has been active for over a century, involves a network of individuals who collect freshly cooked meals from homes and deliver them to workers in their offices across the city. The system is famous for its exceptional accuracy and efficiency, often utilizing bicycles and local trains for transport.

Explanation

Dominique Strauss-Kahn served as the Managing Director of the International Monetary Fund (IMF) from 2007 to 2011. He resigned from his position in May 2011. Therefore, he is directly concerned with the IMF. The other options are incorrect as he did not hold a leadership position in Bank of America, World Bank, or Bank of England.

Explanation

Vijender Singh Beniwal is a renowned Indian professional boxer. He made history by becoming the first Indian boxer to win an Olympic medal, securing a bronze at the 2008 Beijing Olympics in the middleweight category. Throughout his career, he has achieved numerous accolades in boxing, including bronze medals at the 2009 World Championships and 2010 Commonwealth Games, and silver medals at the 2006 and 2014 Commonwealth Games. In 2015, he transitioned to professional boxing, further solidifying his career in the sport.

Explanation

Suman Bala is a former Indian field hockey player. She represented the India women's national field hockey team. She was part of the team that won Gold at the Manchester 2002 Commonwealth Games. Her sport is explicitly listed as field hockey.

Explanation

Abhinav Bindra won India's first-ever individual Olympic gold medal at the 2008 Beijing Olympics. He achieved this historic feat in the men's 10m air rifle shooting event. Sushil Kumar and Vijender Kumar both won bronze medals at the Beijing Olympics in wrestling and boxing, respectively. Rajyavardhan Singh Rathore won an individual silver medal at the 2004 Athens Olympics, not a gold in Beijing.

Explanation

The Indira Gandhi Indoor Stadium in New Delhi is recognized as the largest indoor stadium in India. It has a seating capacity of approximately 14,500 to 15,000 spectators, making it the biggest among the options provided. The stadium was originally built for the 1982 Asian Games and underwent significant renovations for the 2010 Commonwealth Games. In contrast, the Netaji Indoor Stadium in Kolkata has a seating capacity of around 12,000. The Jawaharlal Nehru Stadium in Kolkata is primarily an outdoor football stadium with a much larger capacity, but it is not an indoor facility.

Explanation

India Green is a cricket team that participated in the NKP Salve Challenger Trophy, an Indian domestic limited-overs cricket tournament. The Board of Control for Cricket in India (BCCI) organized this annual competition to provide a platform for senior and emerging players. From the 2006-07 season onwards, the participating teams were rebranded as India Blue, India Red, and India Green. Therefore, India Green is directly associated with the Challenger Trophy.

Explanation

Sir Alex Ferguson is famously associated with football, both as a player and, more prominently, as a manager. He had a playing career as a forward for several Scottish clubs, including Dunfermline Athletic and Rangers. However, he is best known for his incredibly successful managerial career, most notably with Manchester United from 1986 to 2013. During his tenure at Manchester United, he won an unprecedented 38 trophies, including 13 Premier League titles and two UEFA Champions League titles, solidifying his legacy as one of the greatest football managers of all time.

Explanation

Bhaichung Bhutia is famously associated with football. He is a former Indian professional footballer who played as a striker for the India national team and various clubs throughout his career. Bhutia is widely regarded as a torchbearer of Indian football and is often nicknamed the "Sikkimese Sniper" for his exceptional shooting skills. He also captained the national side and has been instrumental in raising the profile of Indian football internationally.

Explanation

The Lal Bahadur Shastri Stadium, a multi-purpose sports venue primarily used for cricket and football, is located in Hyderabad, Telangana, India. Originally known as Fateh Maidan, it was renamed in 1967 in honor of India's former Prime Minister, Lal Bahadur Shastri. The stadium has a seating capacity of approximately 25,000 to 30,000 spectators. While it previously hosted international cricket matches, its use for such events ceased in 2005 after the construction of the Rajiv Gandhi International Cricket Stadium in Hyderabad. However, it continues to be utilized for national sporting events and various other functions.

Explanation

Kapil Dev, the legendary Indian cricketer and 1983 World Cup-winning captain, was commissioned into the Territorial Army (TA) as an honorary Lieutenant Colonel on September 24, 2008. He joined as an honorary officer and acts as a brand ambassador for the Armed Forces. While he does not participate in rigorous training, his association aims to inspire youth to join the Army. Other cricketers like Sachin Tendulkar and MS Dhoni have also received honorary ranks in the armed forces, with Tendulkar becoming a Group Captain in the Indian Air Force and Dhoni also holding the rank of Lieutenant Colonel in the Territorial Army. Anil Kumble and Sunil Gavaskar do not hold honorary ranks in the Territorial Army.

Explanation

Saina Nehwal is a renowned Indian professional badminton player. She has achieved numerous accolades in the sport, including an Olympic bronze medal and multiple BWF Super Series titles. Her career has been dedicated to playing badminton at the highest international level. Therefore, she is directly associated with badminton.

Explanation

M. Annadurai served as the Project Director for India's first lunar mission, Chandrayaan-1. He is often referred to as the "Moon Man of India" for his significant contributions to India's space program, including Chandrayaan-1 and Chandrayaan-2. Chandrayaan-1, launched in 2008, was instrumental in the discovery of water molecules on the Moon. While Srinivasa Hegde was also a Mission Director for Chandrayaan-1, M. Annadurai held the role of Project Director.

Explanation

To find the number of 2s followed by 1 but not preceded by 4, we need to scan the given sequence for the pattern "X21" where X is any numeral except 4.

Let's examine the sequence: 42141421124441221211442121421214142146

1. The first '2' (at index 1) is followed by '1' but preceded by '4'. This does not meet the condition.
2. The '2' at index 6 is followed by '1' but preceded by '4'. This does not meet the condition.
3. The '2' at index 16 is followed by '1' and preceded by '2'. This meets the condition. (Count 1)
4. The '2' at index 18 is followed by '1' and preceded by '1'. This meets the condition. (Count 2)
5. The '2' at index 22 is followed by '1' but preceded by '4'. This does not meet the condition.
6. The '2' at index 24 is followed by '1' and preceded by '1'. This meets the condition. (Count 3)
7. The '2' at index 27 is followed by '1' but preceded by '4'. This does not meet the condition.
8. The '2' at index 29 is followed by '1' and preceded by '1'. This meets the condition. (Count 4)
9. The '2' at index 34 is followed by '1' but preceded by '4'. This does not meet the condition.

Therefore, there are four such instances in the given list of numerals.

Explanation

The first condition states the number is greater than 3 but less than 8, which means the possible numbers are 4, 5, 6, or 7. The second condition states the number is greater than 6 but less than 10, meaning the possible numbers are 7, 8, or 9. The only number that satisfies both conditions simultaneously is 7. Therefore, 7 is the correct answer.

Explanation

In a plane mirror, the image formed is as far behind the mirror as the object is in front of it. If the boy is standing 1 meter in front of the mirror, his image will be formed 1 meter behind the mirror. Therefore, the total distance between the boy (object) and his image will be the sum of the distance from the boy to the mirror and the distance from the mirror to the image. This calculates to 1 meter + 1 meter = 2 meters.

Explanation

Raman first walks 10m west, then turns north and walks 20m. Finally, he turns east and walks another 10m. The 10m walked west and the 10m walked east cancel each other out in terms of horizontal displacement. His net movement is solely the 20m he walked towards the north. Therefore, he is 20m north of his original position.

Explanation

An aeroplane normally flies in the sky. In the given code, 'sky' is called 'sea'. Therefore, according to the code, an aeroplane flies in the sea.

Explanation

To find the total number of students in the class, add Vijay's rank from the top and his rank from the bottom, and then subtract one. Vijay is ranked 7th from the top and 28th from the bottom. Adding these ranks gives 7 + 28 = 35. Since Vijay is counted twice in this sum (once for his top rank and once for his bottom rank), we subtract 1 to get the actual total number of students. Therefore, 35 - 1 = 34 students are in the class.

Explanation

First, determine the value of the number. If one-seventh of one-third of a number is 5, then (1/7) * (1/3) * number = 5, which simplifies to (1/21) * number = 5. Multiplying both sides by 21 gives the number as 105. Next, calculate 25% of 400% of the number. This can be written as (25/100) * (400/100) * 105. This simplifies to (1/4) * 4 * 105, which equals 1 * 105. Therefore, 25% of 400 of the number is 105.

Explanation

Anuj's rank from the bottom can be calculated using the formula: Total number of students - Rank from the top + 1. In this case, there are 73 students in the class and Anuj ranks 23rd from the top. So, 73 - 23 + 1 equals 50 + 1, which is 51. Therefore, Anuj's rank from the bottom is 51.

Explanation

Viju's mother is the only daughter of Vijay's mother. This means Viju's mother is Vijay's sister. Therefore, Vijay is Viju's maternal uncle. Since maternal uncle is not among the options A, B, or C, the correct answer is D) None of these.

Explanation

First, calculate Seema's and Meena's initial shares. Seema's share is (3/5) * 25,000 = Rs. 15,000, and Meena's share is (2/5) * 25,000 = Rs. 10,000. Next, add Rs. 5,000 to each of their shares. Seema's new share becomes 15,000 + 5,000 = Rs. 20,000, and Meena's new share becomes 10,000 + 5,000 = Rs. 15,000. Finally, find the new ratio by dividing both new shares by their greatest common divisor. The new ratio of Seema's share to Meena's share is 20,000 : 15,000, which simplifies to 4:3.