MPSC State Service 2020 · GS · Question 31 of 97

Match the following: Impact of Noise on Human Activities. Column - I Column - II (Noise level) (Human Activities) a. 100 dB i. Sleep Interference b. 40 dB ii. Loss of Working Efficiency c. 70 dB iii. Permanent Loss of hearing d. 90 dB iv. Speech Interference

Environment

Aa - iii, b - i, c - ii, d - iv
Ba - iii, b - i, c - iv, d - iiCorrect
Ca - i, b - iii, c - iv, d - ii
Da - iv, b - ii, c - iii, d - i

Answer: B. a - iii, b - i, c - iv, d - ii

Explanation

100 dB causes permanent hearing loss (iii), 40 dB disturbs sleep (i), 70 dB interferes with speech (iv), 90 dB reduces working efficiency (ii): a-iii, b-i, c-iv, d-ii.

Source: MPSC Rajyaseva Prelims 2020 – GS Paper I (Set D), official paper

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