Q1. [1]
Assertion (A) : The waste we generate daily may be biodegradable or non-biodegradable. Reason (R) : The waste generated, if not disposed off properly may cause serious environmental problems.
- A Both (A) and (R) are true and (R) is the correct explanation of (A).
- B Both (A) and (R) are true and (R) is not correct explanation of (A).
- C (A) is true, but (R) is false.
- D (A) is false, but (R) is true.
Previously asked in CBSE board exam
2024 31/3/1 Q20
Generated by claude-sonnet-4-6 · 2026-06-15 06:44 · grounding rag
Model Answer
Option B: Both (A) and (R) are true and (R) is not the correct explanation of (A).
Both statements are independently true facts about waste, but improper disposal being problematic does not explain why waste is classified as biodegradable or non-biodegradable.
Explanation
- (A) is true: Waste generated daily can be biodegradable (vegetable peels, food waste) or non-biodegradable (plastic, synthetic materials). ✓
- (R) is true: Improper disposal of waste does cause serious environmental problems. ✓
- But (R) does NOT explain (A): The classification of waste into biodegradable/non-biodegradable depends on whether biological processes can break it down — this is unrelated to disposal methods. The two statements are separate facts, not cause-and-effect.
- Examiner tip: In Assertion-Reason questions, always check both truth AND whether R logically explains A. Here both are true but independent facts from Chapter 13.
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