Dust Particles and Dry Winds | | Chary's Lectures on PYQs & Polity

Q: Consider the following statements: 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?

Statement I is correct but Statement II is not correct Dust particles in the atmosphere are highly concentrated in subtropical and temperate regions. This is because these areas contain extensive landmasses, arid deserts, and strong, dry winds that actively sweep loose soil into the air. Hence, Statement I is correct. However, the dry nature of winds in subtropical and temperate areas is precisely why they are so dusty. (By contrast, equatorial regions experience heavy, frequent rainfall that washes dust out of the atmosphere, while ice-covered polar regions lack the wind convection needed to lift particles). Hence, Statement II is not correct. (For a deeper dive into atmospheric composition, refer to Chapter 8 of the 11th Class NCERT, "Fundamentals of Physical Geography").

Geography › Physical Geography (World) Year 2025 Q. 4 4 of 64 in this theme

Consider the following statements:
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