Which Indian soil term is correctly associated with course, basin or associated feature “it commonly has high humus and may be acidic”, and also with “prolonged saturation slows decomposition of plant material”?

Correct Answer: Option C — Peaty and Marshy Soil. Peaty and Marshy Soil is correctly identified as it commonly has high humus and may be acidic. Peaty and Marshy Soil is also associated with prolonged saturation slows decomposition of plant material. Another identifying fact about Peaty and Marshy Soil is that it commonly has high humus and may be acidic. A further exam-relevant fact about Peaty and Marshy Soil is that prolonged saturation slows decomposition of plant material. Why the other options are incorrect: • Option A — Khadar: Khadar is fresh silt renewal generally makes it highly fertile. It is incorrect here because Khadar is instead associated with it is more frequently flooded than the older alluvial terraces. • Option B — Bangar: Bangar is calcareous kankar nodules may occur within its profile. It is incorrect here because Bangar is instead associated with it is generally less frequently renewed by floods than khadar. • Option D — Alluvial Soil: Alluvial Soil is it commonly contains varying proportions of sand, silt and clay. It is incorrect here because Alluvial Soil is instead associated with it supports crops such as rice, wheat, sugarcane and jute. Exam Takeaway: Connect Peaty and Marshy Soil with “it commonly has high humus and may be acidic” and “prolonged saturation slows decomposition of plant material” for revision.