Previous Year UPSC Questions

Explanation

According to the Economic Survey 2001-02, during the period from 1997-1998 to 1999-2000, marine products were the largest agricultural export by India in terms of value due to high global demand in countries like the USA, Japan, and Europe, and improved processing and storage. Here is a breakdown of the export values (in million USD) for key commodities during this period according to the Economic Survey 2001-02.

Explanation

A tropical cyclone is a powerful, rotating storm system characterized by strong winds, heavy rain, and low pressure, typically forming over warm ocean waters in tropical regions. Assertion (A) is true: In a tropical cyclone, surface winds spiral inwards toward the low-pressure center due to the Coriolis effect. The rotation direction depends on the hemisphere (counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere). Reason (R) is true: Air descends in the center of the cyclone, creating the eye of the storm, which is typically calm and free of rain. This descent is due to subsidence in the center of the low-pressure system. Reason (R) is NOT the correct explanation of Assertion (A):

The inward spiraling of surface winds is caused by the pressure gradient force pulling air toward the low-pressure center and the Coriolis effect, not by the descending air in the cyclone’s center.

Explanation

A is matched with 2: Article 16 (2) states that no citizen can be discriminated against or be ineligible for any employment or office under the State on grounds of only religion, race, caste, sex, descent, place of birth or residence. B is matched with 4: Article 29 (2) ensures that no citizen shall be denied admission to any state-maintained or state-aided educational institution on grounds of religion, race, caste, language, or any of them. C is matched with 3: Article 30 (1) grants minorities the right to establish and administer educational institutions of their choice. D is matched with 1: Article 31 (1) refers to the protection of property rights and ensures no person shall be deprived of their property except by the authority of law.

Explanation

Thundercloud development, specifically cumulonimbus clouds, is influenced by various climatic and geographical factors.

Statement 1 is correct: Condensation is the process by which water vapor in the atmosphere cools and turns into liquid water droplets. For condensation to occur, the air must be saturated, and cooling must take place. This forms clouds, and in the case of thunderstorms, the towering cumulonimbus clouds. These clouds result from intense condensation when warm, moist air rises and cools.

Statement 2 is correct: High temperatures near the Earth’s surface heat the air, causing it to become lighter and rise (convection). Humidity refers to the amount of water vapor in the air. When the air is warm and moist, it carries more energy, which is essential for unstable atmospheric conditions. These conditions fuel the upward movement of air masses, leading to the formation of thunderclouds.

Statement 3 is correct: Orography refers to the influence of mountains and terrain on weather patterns. When air is forced to rise over mountains (called orographic lifting), it cools and condenses, forming clouds. This lifting mechanism often triggers thunderstorms, particularly on the windward sides of mountains where moisture-laden air ascends.

Statement 4 is correct: Vertical winds, or updrafts, are essential for the development of cumulonimbus clouds. These updrafts carry warm, moist air upward into the colder layers of the atmosphere, allowing the clouds to grow vertically. The combination of strong upward motion and moisture contributes to the towering structure of thunderclouds.

Explanation

The Right to Equality, enshrined as Fundamental Rights in Articles 14 to 18 of the Indian Constitution, ensures that all citizens are treated equally before the law and have access to the same legal protection. Article 14 guarantees equality before the law and equal protection of the laws. Article 15 prohibits discrimination based on religion, race, caste, sex, or place of birth or any of them. Article 16 states that no citizen can be discriminated against or be ineligible for any employment or office under the State on grounds of only religion, race, caste, sex, descent, place of birth or residence. Article 17 abolishes untouchability, outlawing its practice. Article 18 prohibits the conferment of hereditary titles, maintaining equality by ensuring no citizen is bestowed with aristocratic privileges (except for military and academic distinctions).

Explanation

Option (c) is correct: El Nino and Southern Oscillations (ENSO) events are known to significantly impact the Indian monsoon. During an El Niño event, sea surface temperatures in the central and eastern Pacific Ocean warm unusually. This disrupts global atmospheric circulation, including the monsoon winds. In India, this results in weakened monsoons and reduced rainfall, often leading to drought-like conditions in certain regions. The Southern Oscillation, a periodic change in atmospheric pressure between the western and eastern Pacific, works in tandem with El Niño to amplify its effects. Options (a), (b) and (d) are incorrect:

La Niña (cooler Pacific) typically strengthens the monsoon. Jet streams primarily influence monsoon onset and withdrawal, not occasional weak rainfall. Greenhouse effect, while contributing to long-term climate change, does not directly explain short-term monsoon variations.

Explanation

Dr. B.R. Ambedkar regarded the Right to Constitutional Remedies (Article 32) as the "heart and soul of the Constitution" because it provides the means to enforce all other Fundamental Rights. Article 32 empowers individuals to directly approach the Supreme Court in case of violation of their Fundamental Rights, ensuring their protection and justiciability.

Explanation

Balkh, in modern day Northern Afghanistan, was a gateway to Central Asia and a significant center of trade and culture. The region was also critical for securing the northwestern frontier of the Mughal Empire from Uzbek threats.

Option (a) is correct: Shah Jahan’s Balkh Campaign (1646 to 1647) was a military expedition to consolidate and expand the Mughal Empire’s influence in Central Asia. The campaign was aimed at asserting Mughal control and securing a friendly ruler in Balkh and Badakshan which bordered Kabul. During this period Balkh was controlled by Uzbeks, under Nazr Muhammad Khan. The Mughal forces successfully captured Balkh and Badakhshan with minimal resistance, as Nazr Muhammad fled to Iran. In 1647, Shah Jahan decided to withdraw Mughal forces from Balk and the region reverted to Uzbek control.

Explanation

The Directive Principles of State Policy (DPSP) aim to establish social and economic democracy in India. These principles serve as guidelines for the state to promote the welfare of the people and create a just society. DPSPs are enshrined in Part IV of the Indian Constitution, spanning from Articles 36 to 51. Unlike Fundamental Rights, DPSPs are non-enforceable by courts. However, they act as instruments of instruction for governments, guiding them to undertake positive actions towards achieving social and economic equity.

Explanation

The statue of Gomateshwara, also known as Bahubali, at ShravanaBelagola in Karnataka represents Bahubali, the son of the first Tirthankara Rishabhanatha, not the last Tirthankara Mahavira. This monolithic statue, approximately 57 feet tall was commissioned by the Ganga dynasty minister and commander Chavundaraya.