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GATE 2017 CE (CE2) – Question 18

Air Pollution and Municipal Solid Wastes · Air pollution: pollutants, sources, impacts, control and air quality index · 1 mark · Multiple choice

According to the Noise Pollution (Regulation and Control) Rules 2000 of India referred to in this paper, the daytime residential-zone noise limit in dB(A) Leq is ______.

  1. 55
  2. 65
  3. 75
  4. 85

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Correct answer: (A) 55

Explanation

The historical rule referred to in the question specifies 55 dB(A) Leq for residential daytime noise (A). Leq denotes equivalent continuous sound level; A denotes frequency weighting. The 65 and 75 values correspond to commercial and industrial daytime categories.