According to the Central Pollution Control Board (CPCB), what is the upper limit of sound for residential area ?

Question

Accepted Answer

According to the Central Pollution Control Board (CPCB), the upper limit of sound for residential areas is set at 55 decibels. This limit is established to ensure a peaceful and healthy living environment for residents, minimizing noise pollution that can lead to stress, sleep disturbances, and other health issues. The CPCB guidelines are designed to protect the well-being of individuals by maintaining noise levels that are conducive to a comfortable living space.

1. **Explanation for Option 2 (55 Decibels):**  
   The CPCB has determined that 55 decibels is an appropriate upper limit for residential areas during the daytime. This level is considered to be a balance between allowing normal daily activities and preventing excessive noise that could disrupt the peace and comfort of residents. It is based on studies and recommendations that consider the impact of noise on human health and well-being.

2. **Explanation for why other options are incorrect:**

- **Option 1 (45 Decibels):**  
     While 45 decibels might be a quieter environment, it is not the standard set by the CPCB for residential areas during the daytime. This level might be more applicable to nighttime noise limits or specific quiet zones, but it is not the upper limit for general residential areas.

- **Option 3 (75 Decibels):**  
     A limit of 75 decibels would be too high for residential areas, as it could lead to significant noise pollution, affecting the quality of life and health of residents. Such a level is more appropriate for industrial areas where higher noise levels are expected and permissible.

- **Option 4 (90 Decibels):**  
     Setting the limit at 90 decibels would be excessively high for residential areas, potentially causing severe noise pollution and health issues such as hearing loss, stress, and sleep disturbances. This level is far beyond what is considered safe and acceptable for residential environments.

In conclusion, Option 2, which sets the upper limit at 55 decibels, is the correct answer as it aligns with the CPCB's guidelines for maintaining a healthy and peaceful residential environment.