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Q30 (UPPCS/2022) Environment & Ecology › Pollution & Conservation

In the context of permissible noise level match List – I with List – II and select the answer from the code given below the lists.
List – I (Area)
A. Residential area
B. Silent zone
C. Industrial area
D. Commercial area
List – II (Permissible Noise Level)
1. 50 db
2. 55 db
3. 65 db
4. 70 db
Code :
A B C D

Explanation

According to the Noise Pollution (Regulation and Control) Rules, 2000, the Central Pollution Control Board (CPCB) has established ambient air quality standards for noise in different areas. The standards are defined for day time (6:00 AM to 10:00 PM) and night time (10:00 PM to 6:00 AM):

  • Industrial Area: 75 dB (Day) / 70 dB (Night)
  • Commercial Area: 65 dB (Day) / 55 dB (Night)
  • Residential Area: 55 dB (Day) / 45 dB (Night)
  • Silence Zone: 50 dB (Day) / 40 dB (Night)

Matching the lists based on the provided values: Residential area matches 55 dB (2), Silent zone matches 50 dB (1), Industrial area matches 70 dB (4 - night limit), and Commercial area matches 65 dB (3). Thus, the correct code is 2-1-4-3.

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