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GeographyHardAsked in: UPSC CAPF · CAPF 2026, Paper I

Consider the following statements regarding the Andaman and Nicobar Islands : 1. There are 836 islands/islets/rocky outcrops. 2. The group of islands is divided by the Ten Degree Channel. 3. The Union Territory is home to tribes such as Koya, Malmi, Melacheri and Aminidivi. 4. There are more than two major ports in the Andaman and Nicobar Islands. Which of the statements given above is/are correct?

  1. A.1 only
  2. B.1 and 2 only
  3. C.1, 2 and 3
  4. D.2 and 4

Correct answer

B. 1 and 2 only

Explanation

The correct answer is B, 1 and 2 only. The islands number 836 by the Union Territory's own count, and the Ten Degree Channel separates the Andaman group from the Nicobar group.

The Andaman and Nicobar Islands lie in the Bay of Bengal and are counted by their administration as 836 islands, islets and rocky outcrops, of which only a few dozen are inhabited. The Ten Degree Channel, running along the 10 degree north parallel, divides the Andaman Islands in the north from the Nicobar Islands in the south. The indigenous tribes here include the Great Andamanese, Onge, Jarawa and Sentinelese of Negrito stock and the Nicobarese and Shompen of Mongoloid stock. Koya, Malmi, Melacheri and Aminidivi are groups of Lakshadweep, so statement 3 is wrong. The Union Territory has only one major port, at Sri Vijaya Puram (formerly Port Blair), so statement 4 is wrong.

A is wrong because statement 2 is also correct. C is wrong because statement 3 describes Lakshadweep. D is wrong because statement 4 is false and statement 1 is left out.

Exam tip: Ten Degree Channel separates Andaman from Nicobar; Nine Degree Channel lies in Lakshadweep.

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Q1.GeographyAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IHard

Consider the following statements:

1. In the tropical zone, the western sections of the oceans are warmer than the eastern sections owing to the influence of trade winds.

2. In the temperate zone, westerlies make the eastern sections of oceans warmer than the western sections.

Which of the statements given above is/are correct?

  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2
Show answer
Correct answer: C. Both 1 and 2

The prevailing winds push warm surface water west in the tropics and east in the middle latitudes. In the tropics the trade winds blow from east to west.

Q2.GeographyAsked in: UPSC Civil Services · CSE Prelims 2023, GS Paper IMedium

Consider the following statements:

Statement-I: The soil in tropical rain forests is rich in nutrients.

Statement-II: The high temperature and moisture of tropical rain forests cause dead organic matter in the soil to decompose quickly.

Which one of the following is correct in respect of the above statements?

  1. A.Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
  2. B.Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I
  3. C.Statement-I is correct but Statement-II is incorrect
  4. D.Statement-I is incorrect but Statement-II is correct
Show answer
Correct answer: D. Statement-I is incorrect but Statement-II is correct

Rain forest soils are poor in nutrients, even though dead matter decomposes very fast there. In the hot, wet climate of tropical rain forests, fallen leaves and wood are broken down by fungi, bacteria and insects within weeks.

Q3.GeographyAsked in: UPSC Civil Services · CSE Prelims 2019, GS Paper IHard

Consider the following statements about Particularly Vulnerable Tribal Groups (PVTGs) in India:

1. PVTGs reside in 18 States and one Union Territory.

2. A stagnant or declining population is one of the criteria for determining PVTG status.

3. There are 95 PVTGs officially notified in the country so far.

4. Irular and Konda Reddi tribes are included in the list of PVTGs.

Which of the statements given above are correct?

  1. A.1, 2 and 3
  2. B.2, 3 and 4
  3. C.1, 2 and 4
  4. D.1, 3 and 4
Show answer
Correct answer: C. 1, 2 and 4

Statement 3 is wrong: 75 PVTGs have been notified in India, not 95. The category was created in 1973, following the Dhebar Commission, as 'Primitive Tribal Groups' and renamed PVTGs in 2006.

Q4.GeographyAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IEasy

Among the following, which one is the least water-efficient crop?

  1. A.Sugarcane
  2. B.Sunflower
  3. C.Pearl millet
  4. D.Red gram
Show answer
Correct answer: A. Sugarcane

Sugarcane needs far more water to grow than the other three crops, so it is the least water-efficient. Sugarcane stays in the field for 12 to 18 months and needs roughly 1,500 to 2,500 mm of water over its life, often supplied by heavy irrigation.

Q5.GeographyAsked in: UPSC Civil Services · CSE Prelims 2023, GS Paper IMedium

With reference to the Earth's atmosphere, which one of the following statements is correct?

  1. A.The total amount of insolation received at the equator is roughly about 10 times of that received at the poles.
  2. B.Infrared rays constitute roughly two-thirds of insolation.
  3. C.Infrared waves are largely absorbed by water vapour that is concentrated in the lower atmosphere.
  4. D.Infrared waves are a part of visible spectrum of electromagnetic waves of solar radiation.
Show answer
Correct answer: C. Infrared waves are largely absorbed by water vapour that is concentrated in the lower atmosphere.

Infrared radiation is strongly absorbed by water vapour, and most water vapour lies in the lowest few kilometres of the atmosphere.