environment medium Fill in the Blank

According to the Central Pollution Control Board (CPCB), the permissible 24-hour limit for PM2.5 in India is _____ µg/m³.

  1. 40
  2. 60
  3. 100
  4. 120

Answer: 60

The CPCB sets the National Ambient Air Quality Standards (NAAQS) for PM2.5 at 60 µg/m³ for a 24-hour average.

Topic Environmental Pollution
Exam Relevance UPSC, SSC
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