GATE 2023 AR — Planning – Question 42

Infrastructure, Services and Utilities · Processing and treatment of solid wastes · 2 marks · Multiple select

Which statements about composting are correct?

Compost can be used as a soil amendment.
Warm tropical conditions are least suitable for composting.
Aerobic composting can include a thermophilic phase.
Windrow and in-vessel methods can be used.

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Show answer and explanation

Correct answer: (A) Compost can be used as a soil amendment.; (C) Aerobic composting can include a thermophilic phase.; (D) Windrow and in-vessel methods can be used.

Explanation

Composting stabilises organic matter for soil use (A). Managed aerobic decomposition commonly reaches a heat-producing thermophilic phase (C), and windrow/in-vessel are recognised systems (D). Warm climates do not make composting inherently least suitable; moisture and aeration still require control. Select A, C, D.

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