| Consider the following statements regarding environmental pollution. |
| 1. Nitrogen oxide and sulphur dioxide are responsible for acid rain. |
| 2. Gas heaters, coal mines and heating devices are the source of carbon monoxides. |
| 3. Chlorofluorocarbons cause ozone depletion in the mesosphere. |
| Select the correct answer using the codes given below. |
A) 1 and 3
B) 2 and 3
C) 1and 2
D) AH of these
Correct Answer: D
Solution :
[d] The nitrogen oxide and sulphur dioxide are responsible for acid rain. The gas heaters, coal mines, heating devices and paddy land (wetland are the source of the\[C{{H}_{4}}\]) are sources of carbon monoxide. Chlorofluorocarbons (CFC) are cause of ozone depletion with many other gases like halocarbon refrigerants, solvents etc.
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