Question

As per Central Pollution Control Board guidelines, the permissible daytime noise level in residential areas is

• A. \(45\ \mathrm{dB(A)}\)
• B. \(50\ \mathrm{dB(A)}\)
• C. \(55\ \mathrm{dB(A)}\)
• D. \(65\ \mathrm{dB(A)}\)

Hint:

For residential areas, \[ \boxed{ \text{Day}=55\ \mathrm{dB(A)},\qquad \text{Night}=45\ \mathrm{dB(A)}. } \]

Answer 1

The Correct Option is C

Step 1: Recall the CPCB ambient noise standards. According to the Central Pollution Control Board (CPCB), the permissible ambient noise limits for residential areas are \[ \begin{aligned} \text{Daytime (6 AM--10 PM)} &= 55\ \mathrm{dB(A)}, \text{Night-time (10 PM--6 AM)} &= 45\ \mathrm{dB(A)}. \end{aligned} \]

Step 2: Identify the daytime limit. Therefore, \[ \boxed{55\ \mathrm{dB(A)}} \] is the correct answer. Hence, \[ \boxed{(C)} \] is the correct answer.