Paper 1 · People, Development and Environment
Match List I (activity) with List II (noise level in dB): A. Hearing, B. Whispering, C. Interference with sleep, D. Normal talk; I. 30, II. 1, III. 60, IV. 30-50.
AA-I, B-II, C-III, D-IV ✓ Correct
BA-II, B-I, C-IV, D-III
CA-IV, B-II, C-III, D-I
DA-III, B-I, C-II, D-IV
Correct answer: (A) A-I, B-II, C-III, D-IV — The correct match is A-I, B-II, C-III, D-IV, so that is the answer.
Explanation
★The correct match is A-I, B-II, C-III, D-IV, so that is the answer.
★The threshold for hearing is around 30 dB, so A goes with I.
★Whispering is very quiet at about 1 dB level in this scheme, so B goes with II.
★Interference with sleep occurs around 60 dB, so C goes with III.
★Normal talk is in the 30-50 dB range, so D goes with IV.
★So the correct match is A-I, B-II, C-III, D-IV.
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