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Class 8
Chemistry :-NCERT Solution - Pollution Of Air And Water

Page No 252:
Question 1:
What are the different ways in which water gets contaminated?


Answer

Page No 252:
Question 2:
At an individual level, how can you help reduce air pollution?


Answer

Page No 252:
Question 6:
Explain circumstances leading to acid rain. How does acid rain affect us?


Answer

Page No 252:
Question 7:
Which of the following is not a greenhouse gas?
(a) Carbon dioxide
(b) Sulphur dioxide
(c) Methane
(d) Nitrogen


Answer

Page No 253:
Question 11:
Why does the increased level of nutrients in the water affect the survival of aquatic organisms?


Answer

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