engineering recuitment UPSSSC JE Civil 2024 Mock Test Environmental Engineering Air and Noise Pollution
What is the permissible noise level in residential areas during daytime and night-time as per the Central Pollution Control Board in India?
1
85 dB and 75 dB
2
65 dB and 55 dB
3
75 dB and 70 dB
4
55 dB and 45 dB