Q. Which of the following zones are correctly matched with their permitted noise level?
1) Industrial ——— 90 dB
2) Commercial —– 75 dB
3) Residential ——- Silence Zone
4) Courts ————- 55 dB
A. Only 1 and 2
B. Only 2 and 3
C. Only 3
D. None of the above
Answer: None of the above
