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Social Science (087) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] deep exam-ready
Assertion (A): The vast alluvial plains of north India are almost devoid of economic minerals. Reason (R): Economic mineral deposits are closely related to the geological structure of a region and the processes involved in their formation. Options: (A) Both (A) and (R) are true and (R) is the correct explanation of (A). (B) Both (A) and (R) are true, but (R) is not the correct explanation of (A). (C) (A) is true, but (R) is false. (D) (A) is false, but (R) is true.
  1. A Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. B Both (A) and (R) are true, but (R) is not the correct explanation of (A).
  3. C (A) is true, but (R) is false.
  4. D (A) is false, but (R) is true.
Generated by claude-sonnet-4-6 · 2026-06-26 13:32 · grounding rag
Model Answer

(A) Both (A) and (R) are true and (R) is the correct explanation of (A).

The north Indian plains are formed of alluvial deposits lacking the geological structures needed for mineral formation, which directly explains why they are mineral-poor.

Explanation

The Reason correctly explains the Assertion: mineral deposits depend on geological structure and formation processes (igneous, metamorphic, sedimentary activity). The alluvial plains of north India were formed by river deposition and lack such structures, hence they are almost devoid of economic minerals. Both statements are true and R logically explains A.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.