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Physical Geography (UPSC) (Part-II)

📆 March 7, 2025

Total Questions: 50

11. Assertion (A) : Existence of human life on Venus is highly improbable. [2005]

Reason (R) : Venus has extremely high level of carbon dioxide in its atmosphere

Correct Answer: (a) Both A and R are true and R is the correct explanation of A
Solution:The atmosphere of Venus is composed primarily of carbon dioxide and much denser and hotter than that of Earth.
The atmosphere of Venus supports opaque clouds made of sulfuric acid, making optical Earth-based and orbital observation of the surface impossible.

12. Assertion (A) : Wind patterns are clockwise in the Northern Hemisphere and anti-clockwise in the Southern Hemisphere. [2005]

Reason (R) : The directions of wind patterns in the Northern and the Southern Hemisphere are governed by the Coriolis effect.

Correct Answer: (a) Both A and R are true and R is the correct explanation of A
Solution:A is true as the direction of wind in the northern hemisphere is clock wise and in southern hemisphere it is anti clock wise. The explanation is correct as this is mainly due to coriolis effect.

13. Where are the Balearic Islands located? [2005]

Correct Answer: (a) Mediterranean Sea
Solution:The Balearic Islands are an archipelago of Spain in the Western Mediterranean sea, near the eastern coast of the Iberian peninsula.

14. Which one of the following pairs is not correctly matched? [2005]

Correct Answer: (c) Nicaragua: Balmopan
Solution:Managua is the capital of Nicaragua, not Balmopan. Balmopan is the capital city of Balize.

15. Consider the following statements: [2005]

  1. The Axis of the earth's magnetic field is inclined at 23 and half to the geographic axis of the earth.
  2. The earth's magnetic pole in the Northern Hemisphere is located on a Peninsula in Northern Canada.
  3. The earth's magnetic equator passes through Thumba in South India.

 

Which of the statements given above is/are correct?

Correct Answer: (b) 2 and 3
Solution:The axis of the Earth's magnetic field is not inclined at 23-2 to the geographic axis of the Earth. The angle of inclination between the Earth's magnetic field and its geographic axis is approximately 11.5 degrees.

16. Consider the following statements: [2005]

  1. Total land area of earth is approximately 1475 lakh square kilometers.
  2. Ratio of land area to water area of earth is approximately 1 : 4.
  3. Maximum percentage of earth's water is in the Pacific Ocean.

 

Which of the statements given above is/are correct?

Correct Answer: (a) 1 & 3
Solution:Total land area is 148226000 km² square kilometers. So, the ratio of land area to water area of earth is approximately 1: 3. The Pacific Ocean is the largest ocean, so maximum percentage of earth's water is present in it.

17. In which one of the following oceans Diamantine Trench is situated? [2006]

Correct Answer: (c) Indian Ocean
Solution:Diamantine Trench is istuated in south-east part of Indian Ocean. The depth of Diamantine Trench is 8047 m.

18. Assertion (A): To orbit around the Sun the planet Mars takes lesser time than the time taken by the earth. [2006]

Reason (R) : The diameter of the planet Mars is less than that of earth.

Correct Answer: (d) ‘A’ is false but ‘R’ is true.
Solution:A is incorrect as the mars revolution round the sun takes 1.88 years of Earth's revolution. The diametre of earth is almost double to the diameter of mars.

19. What is the average distance (approximate) between the sun and the earth? [2007]

Correct Answer: (d) 150 × 10⁶ km
Solution:The actual average distance between the sun and the earth is 152× 10⁶ km which is near to 150 × 10⁶ km.

20. Consider the following statements: [2007]

  1. Either of the two belts over the oceans at about 30° to 35° N and S Latitudes is known as Horse latitude.
  2. Horse latitudes are low pressure belts.

 

Which of the statements given above is/are correct?

Correct Answer: (a) 1 only
Solution:The horse latitudes are located between latitude 30°-35° north and south of the equator. The region lies in an area where there is a ridge of high pressure that circles the earth.
The ridge of high pressure is also called a sub-tropical high.
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