science - pollution of air and water

Class 8 - Science

Pollution of Air and Water

Q&A
Notes
Question:
Explain circumstances leading to acid rain. How does acid rain affect us?
Answer:

Burning of fossil fuels such as coal and diesel releases a variety of pollutants such as sulphur dioxide and nitrogen dioxide into the atmosphere. These pollutants react with water vapours present in the atmosphere to form sulphuric acid and nitric acid respectively. These acids come down with the rain, thereby resulting in acid rain.Effects of acid rain:
(i)Acid rains damage crops.
(ii)Acid rains corrode buildings and structures especially those made of marble such as Taj Mahal.

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Questions and Answers


Pollution of Air and Water - Questions
1. You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.
Answer
2. What are the different ways in which water gets contaminated?
Answer
3. At an individual level, how can you help reduce air pollution?
Answer
4. Clear, transparent water is always fit for drinking. Comment.
Answer
5. Explain the differences between pure air and polluted air.
Answer
6. Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
Answer
7. Describe the 'Greenhouse Effect in your own words.
Answer
8. Prepare a brief speech on global warming. You have to deliver the speech in your class.
Answer
9. Explain circumstances leading to acid rain. How does acid rain affect us?
Answer
10. Describe the threat to the beauty of the Taj Mahal.
Answer
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