Past Questions

The Pardhi community is a nomadic and semi-nomadic group traditionally known for hunting and gathering. They are primarily concentrated in the central part of India, specifically in the states of Maharashtra and Madhya Pradesh. Due to historical colonial laws (such as the Criminal Tribes Act of 1871), they were stigmatized as 'criminal tribes,' a label that has persisted in social perceptions despite the act being repealed. Analysis of other options: - Option (a) Mizoram and Manipur: These are North-Eastern states where different tribal groups (like the Mizo and Meitei) predominate. - Option (b) Bihar and Jharkhand: While these states have various tribal populations (like the Santhals and Mundas), the Pardhi are not the primary community here. - Option (d) Odisha and Tamil Nadu: These states have their own distinct indigenous and nomadic groups, but the Pardhi heartland is Central India.

Ocean acidification occurs when the ocean absorbs carbon dioxide (CO2) from the atmosphere. When CO2 dissolves in seawater, it reacts with water (H2O) to form carbonic acid (H2CO3). This carbonic acid then dissociates into bicarbonate ions and hydrogen ions. The increase in hydrogen ion concentration lowers the pH of the water, making it more acidic. This process reduces the availability of carbonate ions, which are essential for calcifying organisms (like corals and mollusks) to build their shells and skeletons. Why other options are incorrect: - Option (a): Excess oxygen does not cause acidification; in fact, low oxygen levels (hypoxia) are a separate environmental issue. - Option (c): Oil spills cause severe toxic pollution and physical damage to marine life, but they do not change the chemical pH of the global ocean on a systemic scale. - Option (d): Marine biodiversity loss is a consequence (effect) of ocean acidification and other stressors, not the cause of the acidification itself.

The Demographic Transition Model (DTM) is a theoretical framework used in geography and sociology to describe the transition of a country from high birth and death rates to low birth and death rates as it develops from a pre-industrial to an industrialized economic system. Step-by-step breakdown: 1. Stage 1 (Pre-industrial): High birth rates and high death rates result in a stable or slow-growing population. 2. Stage 2 (Early transitioning): Death rates fall rapidly due to improvements in food supply and sanitation, while birth rates remain high, leading to rapid population growth. 3. Stage 3 (Late transitioning): Birth rates begin to fall as a result of urbanization, education, and access to contraception. 4. Stage 4 (Industrialized): Low birth and death rates lead to population stabilization. Why other options are incorrect: - Option (a) refers to 'Migration', not demographic transition. - Option (c) refers to 'Agricultural Productivity' or the 'Green Revolution'. - Option (d) refers to 'Population Policy' or 'Family Planning', which may be a cause of transition but is not the definition of the transition itself.

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide (SO2) and nitrogen oxides (NOx) are released into the atmosphere. These substances rise high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form sulfuric and nitric acids. These acids then mix with water and other materials before falling to the ground as rain, snow, or fog. Analysis of options: - a. Carbon dioxide: While CO2 makes rain slightly acidic (forming carbonic acid), it is a natural part of the carbon cycle and is not the primary driver of the harmful phenomenon known as 'acid rain'. - b. Oxygen: Oxygen is a vital gas for life and does not form acids when mixed with water. - c. Nitrogen: Pure nitrogen gas (N2) is inert and does not cause acid rain; however, nitrogen oxides (NOx) do. - d. Sulfur dioxide: This is a primary pollutant emitted from volcanic eruptions and industrial processes (like burning fossil fuels), which directly leads to the formation of sulfuric acid, the main component of acid rain.

The Gupta Empire was established by Sri Gupta in the late 3rd century CE. He is credited as the founder and the first ruler of the dynasty, although he was a minor ruler compared to his successors. Analysis of other options: - b. Samudragupta: He was the son of Chandragupta I and is known as the 'Napoleon of India' for his extensive military conquests, but he was not the founder. - c. Chandragupta II: Also known as Vikramaditya, he was a great patron of arts and literature and expanded the empire further, but he came much later in the lineage. - d. Skandagupta: He was a later ruler of the dynasty known for successfully repelling the Huna invasions. Therefore, Sri Gupta is the correct answer as the progenitor of the dynasty.

Pobitora Wildlife Sanctuary is located in the state of Assam, India. It is renowned for having the highest density of One-horned Rhinoceroses in the world. It is situated on the southern bank of the Brahmaputra river. Analysis of other options: - Meghalaya: Known for sanctuaries like Nokrek and Balpakram, but not Pobitora. - Darjeeling: This is a district in West Bengal, known for the Singalila National Park, not Pobitora. - Manipur: Known for Keibul Lamjao National Park (the only floating park in the world), not Pobitora.

To solve this question, we must distinguish between 'Social Sector' initiatives and 'Economic/Industrial' initiatives. 1. Social Sector initiatives are those aimed at improving the quality of life, human development, health, education, and social equity (e.g., poverty alleviation, gender equality, and basic amenities). 2. Analysis of Options: - (a) Beti Bachao Beti Padhao: A social initiative focused on preventing gender-biased sex selective elimination and ensuring the education and participation of the girl child. - (b) Stand-Up India: While it involves loans, its primary objective is 'social inclusion' by promoting entrepreneurship among Scheduled Castes (SC), Scheduled Tribes (ST), and women, making it a social-economic upliftment scheme. - (c) Ujjwala Yojana: A social welfare scheme providing clean cooking fuel (LPG) to women from BPL households to improve health and environment. - (d) Startup India: This is an economic/industrial initiative. Its primary goal is to build a strong ecosystem for innovation, drive economic growth, and create jobs by supporting new businesses. It focuses on business scalability and industrial growth rather than basic social welfare or human development. Therefore, Startup India is the correct answer as it is an economic development initiative, not a social sector initiative.

The Aligarh Movement was a 19th-century socio-cultural and educational reform movement among the Muslims of South Asia. It was led by Sir Syed Ahmad Khan, who aimed to modernize Muslim society by promoting Western education and scientific thought while maintaining Islamic values. He founded the Muhammadan Anglo-Oriental College in 1875, which later became the Aligarh Muslim University (AMU). Why other options are incorrect: - b. Muhammad Ali Jinnah: He was a key leader of the All-India Muslim League and the founder of Pakistan, but he belonged to a later political era than the inception of the Aligarh Movement. - c. Allama Iqbal: He was a philosopher and poet who provided the ideological basis for the creation of Pakistan, but he was not the founder or leader of the Aligarh Movement. - d. Maulana Abul Kalam Azad: He was a prominent leader of the Indian National Congress and a proponent of Hindu-Muslim unity, often opposing the separatist tendencies associated with the later stages of the Aligarh-influenced politics.

Step-by-step analysis of the options: 1. **AIDS (Acquired Immunodeficiency Syndrome):** This disease is caused by the Human Immunodeficiency Virus (HIV). HIV attacks the body's immune system, specifically the CD4 cells (T cells), making the body vulnerable to opportunistic infections. Therefore, it is a viral disease. 2. **Tuberculosis (TB):** This is caused by the bacterium *Mycobacterium tuberculosis*. Since it is caused by bacteria, not a virus, option (a) is incorrect. 3. **Malaria:** This is caused by plasmodium parasites (protozoa) and is transmitted to humans through the bite of an infected female Anopheles mosquito. Since it is caused by a parasite, option (b) is incorrect. 4. **Diabetes:** This is a metabolic disorder (non-communicable disease) characterized by high blood glucose levels resulting from defects in insulin production or action. It is not caused by an infectious agent like a virus, bacterium, or parasite. Therefore, option (d) is incorrect. Conclusion: Only AIDS is caused by a virus.

The Chief Secretary is the highest-ranking civil servant in a state government. As per the current administrative records of the Government of Mizoram, Shri Khilli Ram Meena, an officer of the Indian Administrative Service (IAS), serves as the Chief Secretary to the Government of Mizoram. Option (a) is a slight misspelling of the name, and options (c) and (d) refer to individuals who do not hold this specific office. Therefore, option (b) is the correct and precise identification of the current Chief Secretary.

The Earth's interior is divided into three main layers: the crust, the mantle, and the core. The core is the innermost part of the Earth and is primarily composed of heavy metals. Specifically, it consists mainly of an Iron (Fe) and Nickel (Ni) alloy, which is why it is often referred to as the 'NiFe' layer. Analysis of other options: - Option (a) Oxygen and Nitrogen: These are the primary components of the Earth's atmosphere, not the core. - Option (c) Carbon and Hydrogen: These are organic elements common in living organisms and hydrocarbons, but they do not make up the bulk of the Earth's core. - Option (d) Silicon and Magnesium: These elements are the primary constituents of the Earth's mantle (peridotite) and crust (silicates), but they are too light to settle in the core during planetary differentiation.

To determine which river does not originate in India, we examine the source of each option: 1. **Ganga (Option a):** Originates in India at the Gangotri Glacier (Gaumukh) in the Uttarkashi district of Uttarakhand. 2. **Yamuna (Option b):** Originates in India at the Yamunotri Glacier on the Banderpooch peak in the Uttarkashi district of Uttarakhand. 3. **Indus (Option c):** Originates in Tibet (China) near Lake Mansarovar in the Kailash mountain range. It flows northwest through Tibet and then enters India in the Ladakh region before flowing through Pakistan to the Arabian Sea. 4. **Beas (Option d):** Originates in India near the Beas Kund in the Pir Panjal range of the Himalayas in Himachal Pradesh. Since the Indus river originates in Tibet (China) and not in India, it is the correct answer.

Mizo society is traditionally a patriarchal society. In a patriarchal system, the lineage, inheritance, and family authority are passed down through the male line (patrilineal). In Mizo culture, the father is traditionally the head of the household, and children take the father's clan name. Why other options are incorrect: - b. Matriarchal society: This is a system where power and inheritance are passed through the female line (e.g., the Khasi tribe of Meghalaya), which is not the case for Mizos. - c. Polyandrous society: Polyandry is a form of marriage where one woman has multiple husbands. This is not a characteristic of Mizo social structure. - d. Polygamous society: While polygamy (specifically polygyny) may have existed in very specific historical contexts or among certain elites in various tribal societies, the fundamental structural organization of Mizo society is defined by its patriarchal nature rather than being defined as a 'polygamous society' as a whole.

Step-by-step analysis: 1. **Kangchenjunga**: Standing at 8,586 meters, it is the highest mountain peak located in India (specifically on the border between Nepal and Sikkim, India). It is the third-highest mountain in the world. 2. **Nanda Devi**: This is the highest peak located entirely within Indian territory, but it is lower than Kangchenjunga. 3. **Mount Everest**: While it is the highest peak in the world, it is located in Nepal and China, not India. 4. **Anamudi**: This is the highest peak in South India (Western Ghats), but it is significantly lower than the Himalayan peaks. Therefore, among the given options, Kangchenjunga is the highest peak in India.

India ranked 5th in the Climate Risk Index (CRI) 2023, as reported in the Global Climate Risk Index released by Germanwatch. Therefore, option b is correct. The other options are incorrect because 4th, 6th, and 8th do not match India’s actual CRI 2023 rank.

Carbon neutrality refers to achieving a state where the net amount of carbon dioxide released into the atmosphere is zero. This is achieved not by stopping all emissions entirely (which is practically impossible for most economies), but by balancing the amount of carbon emitted with an equivalent amount of carbon removed or sequestered from the atmosphere (e.g., through reforestation, soil carbon sequestration, or carbon capture and storage technology). Analysis of other options: - Option (a) is incorrect because 'completely stopping' emissions is 'Zero Emissions,' which is a stricter standard than neutrality. - Option (c) is misleading; while the 'net' footprint becomes zero, the actual footprint (gross emissions) may still exist as long as it is offset. - Option (d) is incorrect as storing carbon in landfills is not the definition of neutrality and is not a primary method of carbon sequestration.

Social Protection refers to a set of policies and programs designed to reduce poverty and vulnerability by protecting people from risks throughout their life cycle. This includes social insurance (e.g., pensions, unemployment benefits), social assistance (e.g., cash transfers, food stamps), and labor market interventions. Analysis of options: - Option (a) is incorrect because reducing budget deficits refers to 'Fiscal Consolidation' or 'Austerity Measures'. - Option (b) is correct as it accurately defines the core purpose of social protection: mitigating economic shocks and vulnerabilities (such as illness, old age, or job loss). - Option (c) is incorrect because privatization is the transfer of ownership from the public sector to the private sector, which is often the opposite of state-led social protection. - Option (d) is incorrect because encouraging international trade refers to 'Trade Liberalization' or 'Export Promotion'.

The Ramsar Convention, formally known as the Convention on Wetlands of International Importance especially as Waterfowl Habitat, is an international treaty signed in the city of Ramsar in Iran on February 2, 1971. Its primary objective is the conservation and sustainable use of wetlands through local and global actions and international cooperation. Why other options are incorrect: - a. Rainforests: While critical for biodiversity, they are not the specific focus of the Ramsar Convention (though some may contain wetlands). - b. Deserts: These are arid ecosystems and are not the subject of this specific convention. - d. Mangroves: While mangroves are a type of wetland and are protected under the Ramsar Convention, the convention covers ALL types of wetlands (including marshes, fens, peatlands, lakes, rivers, and coral reefs), making 'Wetlands' the most comprehensive and correct answer.

Step-by-step reasoning: 1. **Analyze the Question**: The question asks for the term that describes the relationship between a cultural group (human society) and its natural environment. 2. **Evaluate Option (a) Cultural ecology**: This is the study of how humans adapt to their social and physical environments. It specifically examines the interaction between cultural beliefs/practices and the ecological conditions of the area they inhabit. This matches the question perfectly. 3. **Evaluate Option (b) Cultural convergence**: This refers to the process where different cultures become more similar to one another over time, often due to globalization or interaction. It does not specifically deal with the natural environment. 4. **Evaluate Option (c) Cultural diffusion**: This is the spread of cultural beliefs and social activities from one group to another. It describes the movement of culture across space, not the relationship between culture and nature. 5. **Evaluate Option (d) Cultural assimilation**: This occurs when a minority group or individual gradually adopts the customs and attitudes of a prevailing dominant culture. This is a social process between human groups, not between a group and its environment. Conclusion: Only 'Cultural ecology' addresses the intersection of culture and the natural environment.

The Constitution of India is the supreme law of the land. It is the foundational legal document that defines the political framework, structure of government, and the fundamental rights and duties of citizens. All other laws, statutes, and regulations enacted by the legislature or executive must be consistent with the Constitution; any law that violates the provisions of the Constitution can be declared null and void by the judiciary through the process of judicial review. Why other options are incorrect: - a. Indian Penal Code: This is a specific criminal code (statutory law) enacted by the legislature. It derives its authority from the Constitution and is subordinate to it. - c. Fundamental Rights: These are a crucial part of the Constitution (contained in Part III), but they are components of the supreme law, not the supreme law itself. - d. Directive Principles of State Policy: These are guidelines for the government (contained in Part IV) to ensure social and economic justice. Unlike the Constitution as a whole, they are non-justiciable in a court of law.

The Global Hunger Index (GHI) is a tool designed to measure and track hunger at global, regional, and national levels. It is published annually by the International Food Policy Research Institute (IFPRI) and Concern Worldwide. Reasoning for other options: - a. UNDP: Primarily publishes the Human Development Index (HDI). - b. World Bank: Focuses on global poverty data and economic indicators, but does not publish the GHI. - d. FAO: While the FAO is a lead agency in fighting hunger and publishes 'The State of Food Security and Nutrition in the World' (SOFI) report, it is not the publisher of the Global Hunger Index.

The chemical symbol for Gold is 'Au', which is derived from the Latin word 'Aurum', meaning 'shining dawn'. Analysis of other options: - Option b (Ag) is the symbol for Silver, derived from the Latin 'Argentum'. - Option c (Pb) is the symbol for Lead, derived from the Latin 'Plumbum'. - Option d (Fe) is the symbol for Iron, derived from the Latin 'Ferrum'.

The Paris Agreement is a legally binding international treaty on climate change adopted by 196 Parties at COP 21 in Paris on 12 December 2015. Its primary goal is to strengthen the global response to the threat of climate change by keeping a global temperature rise this century well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase even further to 1.5 degrees Celsius. Analysis of other options: - Option (a) is incorrect because the agreement focuses on a transition to low-carbon economies and 'phasing down' or 'phasing out' fossil fuels over time, not an immediate total end, which would be economically and logistically impossible. - Option (c) is incorrect as population growth is not a direct target or mandate of the Paris Agreement. - Option (d) is incorrect because the agreement aims to drastically reduce greenhouse gas emissions to mitigate global warming, not increase them.

Mammals are typically characterized by giving birth to live young (viviparity). However, there is a small group of mammals called monotremes that lay eggs (oviparity). The Platypus (Ornithorhynchus anatinus) and the Echidna are the only living examples of monotremes. Analysis of options: - a. Dolphin: A placental mammal that gives birth to live young. - b. Bat: A placental mammal that gives birth to live young. - c. Platypus: A monotreme mammal that lays eggs, making it the correct answer. - d. Kangaroo: A marsupial mammal that gives birth to underdeveloped young which then develop in a pouch.

Based on the 2011 Census of India (the most authoritative and widely used data source for competitive exams in India), Serchhip district in Mizoram recorded the highest literacy rate in the country, with a literacy rate of approximately 98.23%. Analysis of other options: - Malappuram (Kerala): While Kerala is the most literate state, Malappuram is historically one of the lower-literacy districts within Kerala, not the highest in India. - Coimbatore (Tamil Nadu): While highly developed and literate, it does not surpass the rates found in the hill districts of Mizoram. - Mokokchung (Nagaland): This district has a high literacy rate, but it is lower than that of Serchhip. Therefore, Serchhip is the correct answer.