Ncert solutions

Ncert solutions

Grade 8

Pollution of Air and Water | Exercise

Question 1

Q1) What are the different ways in which water gets contaminated ?

Solution:

Water gets contaminated in the following ways:

  • Industrial wastes: Many industries dispose waste into rivers and streams.These chemicals are poisonous and contaminate water.
  • Sewage waste: Water gets contaminated when sewage is discharged without proper treatment into rivers,sea or any other water body.
  • Agricultural chemicals: Farmers use excessive insecticides,pesticides and fertilizers to increase crop production. Due to rains and floods, these chemicals get carried away. This leads to water pollution.
  • Land waste: Due to improper disposal of day-to-day waste, the rain water gets contaminated.

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subject-cta

Question 1

Q1) What are the different ways in which water gets contaminated ?

Solution:

Water gets contaminated in the following ways:

  • Industrial wastes: Many industries dispose waste into rivers and streams.These chemicals are poisonous and contaminate water.
  • Sewage waste: Water gets contaminated when sewage is discharged without proper treatment into rivers,sea or any other water body.
  • Agricultural chemicals: Farmers use excessive insecticides,pesticides and fertilizers to increase crop production. Due to rains and floods, these chemicals get carried away. This leads to water pollution.
  • Land waste: Due to improper disposal of day-to-day waste, the rain water gets contaminated.

Still have questions? Our expert teachers can help you out

Book a free class now

Want to top your science exam ?

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subject-cta
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