Select the correct answer from the choice A, B, C given in each case.

1. The major pollutant released during burning of fossil fuels.
   A: Carbon monoxide B: Sulphur dioxide C: Hydrogen sulphide

2. The green house gas which on combustion produces another green house gas.
   A: Nitrous oxide B: Ozone C: Methane

3. The gas which in presence of U.V. light gives two atoms of the same gas.
   A: Oxygen B: Ozone C: Carbon dioxide

4. A chemical responsible for ozone depletion.
   A: Methyl acetylene B: Methyl chloride C: Methanol

5. A renewable source of energy which causes minimum or no pollution.
   A: Fossil fuel B: L.P.G. C: Hydro power.

1. B: Sulphur dioxide

2. C: Methane

3. B: Ozone

4. B: Methyl chloride

5. C: Hydro power