Question

Assertion (A): Waterlogged soil typically displays a grayish color due to reduced oxygen levels.
Reason (R): Upland soil usually maintains a reddish or brownish hue due to its well-aerated nature.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
• B. Both (A) and (R) are correct but (R) is NOT the correct explanation of (A).
• C. (A) is correct but (R) is not correct.
• D. (A) is not correct but (R) is correct.

Hint:

Soil color is an indicator of its aeration and redox status—gray indicates reduced (anaerobic), red indicates oxidized (aerobic).

Answer 1

The Correct Option is A

Waterlogged soils become anaerobic, which reduces iron and manganese compounds, leading to a grayish soil color. Upland soils, which are well-aerated, promote oxidation of iron, giving them a reddish or brown hue. Thus, both statements are correct and the reason explains the assertion well.