Ambient noise level in residential area is

Options

A. 75/70 dB
B. 65/55 dB
C. 55/45 dB
D. 50 /45dB

Answer

**Step-by-Step Solution:**

1. **Understanding Ambient Noise Levels**: Ambient noise levels refer to the background noise present in a specific environment. In residential areas, these levels are regulated to ensure a peaceful living environment.

2. **Referencing Regulatory Guidelines**: According to the Noise Pollution Control Committee, there are specific permissible noise levels for different zones, including residential areas.

3. **Identifying Daytime Noise Levels**: The permissible noise level in residential areas during the daytime is set at 55 decibels (dB).

4. **Identifying Nighttime Noise Levels**: During nighttime, the permissible noise level in residential areas is reduced to 45 decibels (dB).

5. **Comparing with Other Zones**:
- For industrial areas, the permissible noise level is higher, at 75 dB during the day and 70 dB at night.
- Commercial areas, like markets, have permissible noise levels of 65 dB during the day and 50-55 dB at night.
- Silent zones, such as hospitals, have the strictest regulations, allowing only 50 dB during the day and 45 dB at night.

6. **Conclusion**: Therefore, the ambient noise levels in residential areas are 55 dB during the day and 45 dB at night.

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