Limit of $BOD$ prescribed by the Central Pollution Control Board $(CPCB)$ for the discharge of industrial and municipal wastewater into natural surface water is

  • A
    $ < 3.0 \, ppm$
  • B
    $ < 10 \, ppm$
  • C
    $ < 100 \, ppm$
  • D
    $ < 30 \, ppm$

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