Match the items in Column A with the items in Column B. Column A Column B 1. Global warming a. Water pollution 2. Greenhouse effect b. Acid rain 3. Particulate matter c. Particulate matter 4. Chlorofluorocarbons d. Damage the ozone layer 5. CFCs e. The warming of the Earth's atmosphere due to trapping of the sun's heat rays by carbon dioxide in the atmosphere. 6. Soot f. Increase in the overall temperature of the earth. 7. Sewage g. Tiny, suspended particles in the air 8. Nitric acid h. Air pollution.

1. Global warming is increase in the overall temperature of the earth and it happens due to greenhouse gases. 2. Greenhouse effect is the warming of the earth's atmosphere due to trapping of sun's heat rays by carbon dioxide in the atmosphere. 3. Particulate matter is tiny suspended particles in the air and it is also called particle pollution. 4. Chlorofluorocarbons are the cause of Air pollution because they break-down the ozone layer that protects the earth from ultraviolet radiation. 5. CFCs damage the ozone layer that protects the earth from ultraviolet radiation. 6. Soot is an example of particulate matter. 7. Sewage causes water pollution and it affects the life of humans and aquatic animals and plants. 8. Nitric acid causes the acid rain because oxides of sulphur and nitrogen react with water moisture in atmosphere to form acid and comes as acid rain. Column A Column B 1. Global warming f. Increase in the overall temperature of the earth. 2. Greenhouse effect e. The warming of the earth's atmosphere due to trapping of sun's heat rays by carbon dioxide in the atmosphere. 3. Particulate matter g. Tiny, suspended particles in the air 4.Chlorofluorocarbons h. Air pollution. 5. CFCs d. Damage the ozone layer 6. Soot c. Particulate matter 7. Sewage a. Water pollution 8. Nitric acid b. Acid rain

Pollutants are the elements, molecules and particles involved in pollution- life can be harmed when exposed to these materials, and the effects of them on humans and plants are well known. Major pollutants include effluents discharge from industries, agricultural wastes, domestic sewage in cities, air pollutants like smog, automobile emissions etc.

E M B I B E

Study Mate Science Class 8>Chapter 18 - Pollution of Air and Water>NUT Cracker>Q IV

EASY

8th CBSE

IMPORTANT

Earn 100

Acid rain causes

50% studentsanswered this correctly

Important Questions on Pollution of Air and Water

MEDIUM

8th CBSE

IMPORTANT

Study Mate Science Class 8>Chapter 18 - Pollution of Air and Water>NUT Cracker>Q IV

Global warming can cause

EASY

8th CBSE

IMPORTANT

Study Mate Science Class 8>Chapter 18 - Pollution of Air and Water>NUT Cracker>Q V

Match the items in Column A with the items in Column B.

Column A	Column B
1. Global warming	a. Water pollution
2. Greenhouse effect	b. Acid rain
3. Particulate matter	c. Particulate matter
4. Chlorofluorocarbons	d. Damage the ozone layer
5. CFCs	e. The warming of the Earth's atmosphere due to trapping of the sun's heat rays by carbon dioxide in the atmosphere.
6. Soot	f. Increase in the overall temperature of the earth.
7. Sewage	g. Tiny, suspended particles in the air
8. Nitric acid	h. Air pollution.