Pollution of Air and Water Worksheet-1

Pollution of Air and Water Worksheet-1

1. Air pollution has harmful effect on the environment. Which of the air pollutant is wrongly matched with its corresponding effect?

(a) Dust - reduces photosynthesis in green plants

(b) Carbon monoxide - reduces oxygen in the blood

(c) Chlorofluorocarbon - damages nerves and tissues

(d) Nicotine - hardens and narrows blood vessels

2. Air pollution has several causes. Which of the following is not responsible for causing air pollution?

(a) Establishing forest reserves

(b) Using pesticides in farms

(c) Developing housing estates

(d) Quarrying for limestone

3. The drastic environmental change is regarded as an outcome of pollution. Identify which of the following changes is not an effect of air pollution.

(a) Thinning of the ozone layer

(b) Increase in the number of diabetic patients

(c) Destruction of habitats

(d) Global warming

4. Green House effect is termed as the cause for the melting of the glaciers in the Antarctic region. Select the  gas which can be associated with the greenhouse effect:

(a) carbon dioxide                        (b) Oxygen

(c) nitrogen dioxide                     (d) sulphur dioxide

5. The SPM count or the Suspended Particulate Matter count is found to be high in the Industrial Areas in India. The Carbon particles and the smoke from factories:

(a) increase the rate of respiration in plants

(b) decrease the rate of photosynthesis in plants

(c) increase the absorption of carbon dioxide by plants

(d) decrease the rate of transpiration in plants

6. The oil refineries near Mathura in UP, India are regarded as a threat to the Taj Mahal, because they are responsible for acid rain in the area. Which of the following gases results in the formation of acid rain?

(a) Ozone                                        (b) Carbon monoxide

(c) Sulphur dioxide                      (d) Chlorofluorocarbon

7. The Central Pollution Control Board in India devises policies to control the menace of pollution. Environmental pollution can be controlled by:

(a) spraying insecticides and pesticides

(b) the open burning of tree stumps

(c) treating factory wastes before disposing them

(d) disposing hot water from power stations into the sea

8. The Chlorofluorocarbons which are found in aerosols deplete the ozone layer. The ozone layer of our atmosphere protects us from the bad effects of:

(a) carbon dioxide                        (b) CFC's

(c) the sun's ultraviolet rays      (d) all of these

9. Carbon Monoxide is regarded as a heteronuclear diatomic molecule. Carbon monoxide emitted by automobiles prevents oxygen transport to body tissues by:

(a) changing O₂ to CO₂

(b) destroying hemoglobin

(c) forming a stable compound with hemoglobin

(d) obstructing the reaction of oxygen with hemoglobin

10. The composition of air in the atmosphere shows that each of the gases are present in definite proportions, which is very much essential for the survival of life on this planet. If there was no CO₂ in the atmosphere, then the earth's temperature would be:

(a) less than the present             (b) same as present

(c) higher than the present        (d) dependent on O₂ content of air

Answer Key:

(1)-(c); (2)-(a); (3)-(b); (4)-(a); (5)-(b); (6)-(c); (7)-(c); (8)-(c); (9)-(c); (10)-(a)