Question

Arrange the following consequences of submergence in the soil in the correct sequence:
(A). Depletion of soil oxygen,
(B). Accumulation of toxic substances like hydrogen sulfide,
(C). Loss of beneficial soil organisms,
(D). Increased soil pH in acidic soil.

• A. (A), (C), (B), (D)
• B. (A), (B), (C), (D)
• C. (B), (A), (D), (C)
• D. (C), (B), (D), (A)

Hint:

Understand the biological and chemical changes occurring during waterlogging to answer sequence-based soil science questions.

Answer 1

The Correct Option is B

When soil is submerged, oxygen is depleted first, followed by accumulation of toxic substances like hydrogen sulfide. This harms beneficial organisms, and under prolonged submergence, pH may increase in acidic soils.