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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] medium exam-ready
Read the following statements carefully and choose the correct option. Assertion (A): The iron and steel industry is called a basic or key industry. Reason (R): All other industries — heavy, medium and light — depend on it for their machinery and raw materials.
  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

Option A is correct. Both (A) and (R) are true and (R) is the correct explanation of (A). The iron and steel industry is basic/key because all other industries depend on it for their machinery.

Source: Iron and Steel Industry, Chapter 6

Explanation

The textbook explicitly states: "The iron and steel industry is the basic industry since all the other industries — heavy, medium and light, depend on it for their machinery." This directly supports both the Assertion and confirms the Reason correctly explains why it is called a basic/key industry. In Assertion-Reason questions, choose Option A only when the Reason accurately and directly explains the Assertion — which it does here.

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