CBSE Class 8 Science Pollution of Air and Water Assignment Set B

CBSE Class 8 Science Pollution of Air and Water Assignment Set B. Chapter wise assignments are being given by teachers to students to make them understand the chapter concepts. Its extremely critical for all CBSE students to practice all assignments which will help them in gaining better marks in examinations. All assignments available for free download on the website are developed by the best teachers having many years of teaching experience in CBSE schools all over the country. Students, teachers and parents are advised to download the CBSE study material. 

<1M>

1.Define air pollution.

2.Which gas is the main constituent of air?

3.Name the green house gases

4.Give two examples of air pollutants.

5.Which two gases cause acid rain?

6.Which phenomenon is responsible for global warming?

7.What is Marble cancer?

8.Which plan was made to save river Ganga?

9.Name two chemical contaminants of water.

10.Which gas is produced due to incomplete combustion of fuels?

11.Name the chemical which is used for the purification of water.

<2M>

12.What is air pollution? Which two diseases are caused due to air pollution?

13.Define potable water? Write the name of any two methods used for the purification of water.

14.What is the Greenhouse effect? How does it affect the atmosphere?

15.What steps has the Supreme Court taken to save the Taj Mahal from air pollution?

16.What is water pollution? Give two examples of water pollutants.

17.What is global warming? Write any one harmful effect of global warming.

18.What is smog? How it is harmful?

19.Why do we need to filter water before drinking? Name any two water borne diseases.

20.List some sources of air pollutants

21.What is green house effect.

22.How does hot water act as pollutant?

<3M>

23.What are the causes of air pollution.

24.What is acid rain? How is it formed?

25.How can you conserve water?

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