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NCERT EXEMPLAR-POLLUTION OF AIR AND WATER -LONG ANSWER QUESTIONS
- Trees help in reducing the pollution of our environment. Lakhs of tree...
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- What do CFCs stand for? Name some devices where CFCs are used. Why CFC...
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- Why is it advised that industries should switch over to cleaner fuels ...
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- It is said, “CO(2) contributes to global warming.” Explain.
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- We should plant trees and nurture the ones already present in the neig...
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- Explain the traditional way of purifying water to make it fit for drin...
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- How can we reduce, reuse and recycle water?
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- Read the paragraph and answer the questions following it. Water is e...
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