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Smoke, fumes, ash, dust, nitric oxide and sulphur dioxide are the main sources of ________.

December 29, 2021
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Smoke, fumes, ash, dust, nitric oxide and sulphur dioxide are the main sources of ________.

Q. Smoke, fumes, ash, dust, nitric oxide and sulphur dioxide are the main sources of ________.

  1. Primary Pollutants
  2. Secondary pollutants
  3. Bio-Degradable Pollutants
  4. None of the above

Answer: (a) Primary Pollutants.

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