NCERT Solutions for Class 8 Science Chapter 18
Important NCERT Questions
8th Chapter 18 Pollution of Air and Water
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 1
What are the different ways in which water gets contaminated?
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Water gets contaminated in the following ways:
• Various industrial units dispose – off wastage including harmful chemicals in rivers. These chemicals are poisonous and contaminate water.
• Water gets contaminated when sewage is disposed – off (without proper treatment) in rivers.
• Ground water gets contaminated by harmful insecticides and pesticides sprayed by farmers and it get mixed with drinking water through rain water.
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