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Geography Optional 300+ Score Pack · Model answer

Soil type in India, classified on the basis of colour, possess specific chemical and mineral characteristics. Discuss.

  • UPSC 2020
  • Physical Setting

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Colour in Indian soils is not descriptive but diagnostic. It records the mineralogy of the parent rock and the chemistry of the weathering that acted on it, which is why a classification built on colour turns out to be a classification by composition.

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • Red Soils — Iron Oxide on Crystalline Rock
  • Black Soils — Basalt and Its Legacy
  • Laterite — Colour as the Record of Leaching
  • Alluvial Soils — Colour by Age and Drainage
  • Other Parent-Rock Signatures
  • Where the Colour Rule Now Misleads
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