Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Environmental Engineering Air and Noise Pollution
Pick-up the INCORRECTLY paired from the following, the source of noise and its noise level (in dB).
1
Air traffic - Propeller type, take-off, at 300 m → 90 to 100
2
Heavy road traffic (Highways) → 60 to 75
3
Rail traffic (at about 30 m) → 90 to 110
4
Air traffic-Jet, take-off, at about 300 m → 100 to 110