Question

Which factor is more responsible for the quick formation of soil in Rajasthan?

• A. Rainfall
• B. Soluble rocks
• C. Vegetation cover
• D. Extreme difference in day and night temperature

Answer 1

The correct option is D

Extreme difference in day and night temperature

The correct option is D.

Explanation of correct option

1. The extreme difference in day and night temperature plays important role in the quick formation of soil in Rajasthan.
2. Because the "air is so dry," heat quickly escapes from the atmospheric air in the desert at night, and the temperature in the desert can shift dramatically from day to night.

Explanation of incorrect options

Option A:

1. Rajasthan is the only state with the lowest rainfall in India.
2. If it receives high rainfall, floods may occur which leads to soil formation.
3. But since Rajasthan does not receive good rainfall, soil formation cannot occur.

Option B:

1. Rocks that are soluble in water dissolve, creating voids and caves that may eventually collapse or serve as funnels for materials on top, resulting in subsidence at the surface.
2. Hence, these rocks do not play any role in soil formation.

Option C:

1. About 16.78 percent of Rajasthan's total land area is covered by natural vegetation.
2. Consequently, it does not aid in the development of soil.

Final answer: Extreme difference in day and night temperature is the factor responsible for the quick formation of soil in Rajasthan