Effects of Carbon Dioxide and Carbon Monoxide

Q.

How is carbon dioxide harmful?

1. It forms smoke

2. Global warming

3. Ozone depletion

4. It causes burns

Q.

Match the column

Column 1	Column 2
Acid rain	oxidation reaction
Ozone layer depletion	water vapour
Global warming	Oxides of sulphur and nitrogen
Respiration	CFCs
Humidity	Carbon dioxide

Q. What chemicals used in aerosol sprays, refrigerators and some plastic foams deplete the ozone layer and so contribute to global warming?

Q.

What measures should be taken to solve the problem of deforestation?

1. Recycling and reducing use.

2. Reforestation

3. Switching to renewable forms of energy.

4. All of these

Q. Ozone allows the Ultraviolet rays of the sun to enter the earth’s atmosphere.

1. True
2. False