Social Science (087) — AI-generated practice question

Formation of Bauxite: Bauxite is formed by the decomposition of surface rocks rich in aluminium silicates. Soluble constituents are removed, leaving behind a residual mass of weathered material. It is thus a product of chemical weathering.

Formation of Coal: Coal is formed by the compression of plant material over millions of years under great heat and pressure in sedimentary rock strata. It is a fossil fuel found in horizontal beds or layers.

State with both: Odisha — it is a major bauxite-producing state (Panchpatmali, Koraput) and also has coal deposits in the Mahanadi valley.

Source: Chapter 5 — Minerals and Energy Resources

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• The key contrast examiners look for: bauxite = weathering/decomposition of rocks; coal = compression of plant material over millions of years in sedimentary layers.
• Name a peninsular state with both — Odisha fits best from the text (65% bauxite share; Mahanadi valley coalfields explicitly mentioned).
• Don't confuse bauxite's mode (residual weathering) with sedimentary deposition — the MCQ in the exercise directly tests this distinction.