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Water — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYWater4 Marks
Question
State any five methods to cheek water pollution.
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Answer

Methods to check water pollution are :
  1. The chemical waste released from industries should be treated for removal of toxic substances before it is released into water bodies.
  2. Domestic sewage should be treated before it is released into water bodies.
  3. Excessive use of insecticides and pesticides should be reduced. Organic farming should be encouraged.
  4. Activities like bathing animals and washing clothes in water bodies should be avoided.
  5. Things like paint, oil, polishes and chemicals should not be thrown into drains and water bodies.

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