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Environmental Issues

Multiple Choice Questions

11. Which one of the following causes ozone depletion ?

Smog
Photochemical Oxidants
Chlorofluorocarbons
Sulphur Dioxide

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12. What disease is caused due to consumption of fishes captured from water contaminated with mercury ?

Jaundice
Minamata
Fluorosis
Black food disease

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13. Which one of the following is not a green-house gas ?

Methane
Carbon Dioxide
Hydrogen
Nitrous Oxide

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14. Which gas contributes the maximum in global warming ?

NO₂
CO₂
CFCs
Sulfur dioxide

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Fill In the Blanks

15. Fill in the blanks with suitable words :

1. Increase in concentration of soluble salts in the soil is called.........

2. Aforestation can check the advancement of......... .

3. DDT is a serious pollutant as it is a.........pollutant and undergoes......... .

4 .........plant has become a troublesome weed in agricultural fields.

5 .........are major aerosol pollutant present in jet aircraft emission.

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True Or False

16. Write “True” or “False” :

The CO₂ causes asphyxial death due to oxygen starvation.

Acid rain caused due to oxides of nitrogen and sulphur.

Ozone destroys the crops of potato, alfalfa and spinach.

The UV rays and IR rays are ionising radiations.

The photochemical smog contains PAN and Ozone.

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One Word Answers

17. Coin one word for the following statements :
Discarded computer parts like monitors, key boards, mouse etc.

E-waste

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18. Coin one word for the following statements :
Degradation of organic waste by worms like red wigglers, white worms and earthworms.

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19. Coin one word for the following statements :
Cleaning of vast areas covered by forests.

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20. Coin one word for the following statements :
Growing of green plants along roadsides to reduce noise pollution.

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