Which Indian soil term is correctly associated with source or location “prominent in western Rajasthan and adjoining dry regions”, and also with “low humus and moisture are common limitations”?

Correct Answer: Option B — Arid Soil. Arid Soil is correctly identified as prominent in western Rajasthan and adjoining dry regions. Arid Soil is also associated with low humus and moisture are common limitations. Another identifying fact about Arid Soil is that low humus and moisture are common limitations. A further exam-relevant fact about Arid Soil is that irrigation can make suitable areas productive but may increase salinity if poorly managed. Why the other options are incorrect: • Option A — Forest and Mountain Soil: Forest and Mountain Soil is found across Himalayan and other highland regions. It is incorrect here because Forest and Mountain Soil is instead associated with texture and humus content change markedly with altitude and slope. • Option C — Saline and Alkaline Soil: Saline and Alkaline Soil is occurs in arid tracts, poorly drained plains and some coastal areas. It is incorrect here because Saline and Alkaline Soil is instead associated with reh, usar and kallar are regional names associated with salt-affected land. • Option D — Peaty and Marshy Soil: Peaty and Marshy Soil is found in parts of Kerala, coastal wetlands and other poorly drained depressions. It is incorrect here because Peaty and Marshy Soil is instead associated with it commonly has high humus and may be acidic. Exam Takeaway: Connect Arid Soil with “prominent in western Rajasthan and adjoining dry regions” and “low humus and moisture are common limitations” for revision.