Consider the following statements: Statement I: The amount of dust particles in the atmosphere

Q. Consider the following statements:

UPSC Civil Services Examination (Prelims) 2025 – General Studies Paper I

Statement I: The amount of dust particles in the atmosphere is more in subtropical and temperate areas than in equatorial and polar regions.

Statement II: Subtropical and temperate areas have less dry winds.

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

(a) Both Statement I and Statement II are correct and Statement II explains Statement I

(b) Both Statement I and Statement II are correct but Statement II does not explain Statement I

(c) Statement I is correct but Statement II is not correct

(d) Statement I is not correct but Statement II is correct

Answer: (c) Statement I is correct but Statement II is not correct

Statement I is correct.
Subtropical and temperate regions, especially around 30°–40° latitudes, have a higher concentration of dust particles. This is because these regions include large deserts (like the Sahara, Arabian, and Central Asian deserts), experience low rainfall, and have strong wind activity that lifts and transports dust. In contrast, equatorial regions receive heavy rainfall that washes out dust, while polar regions have limited dust sources.
Statement II is incorrect.
Subtropical and temperate regions actually experience more dry winds, not fewer. Descending air in subtropical high-pressure belts creates dry conditions and dust-laden winds. These dry winds are a major reason for higher dust levels in these regions.

Answer: (c) Statement I is correct but Statement II is not correct