NEET Questions Solved


Sewage has heavy metals

  1. Elements with density greater than 5g /cm3
  2. Elements with density greater than 10g /cm3
  3. Elements with density greater than 15g /cm3
  4. Substances with density greater than 0.3g/cm3

Page number 276

16.2 Water Pollution and It's control

16.2.1 Domestic Sewage and Industrial Effluents

Environmental Issues

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