Steps taken by the Government of India to control air pollution include:

  • A
    Compulsory $PUC$ (Pollution Under Control) certification of petrol-driven vehicles which tests for carbon monoxide and hydrocarbons.
  • B
    Permission to use only pure diesel with a maximum of $500 \ ppm$ sulphur as fuel for vehicles.
  • C
    Use of non-polluting Compressed Natural Gas $(CNG)$ only as fuel by all buses and trucks.
  • D
    Compulsory mixing of $20\%$ ethyl alcohol with petrol and $20\%$ biodiesel with diesel.

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