| Which of the following is not the effect of air pollution? |
| 1. Respiratory problems |
| 2. Acid rain |
| 3. Typhoid |
| 4. Damaging of ozone layer |
| Select the answer from the following choices. |
A) 1, 2 and 4
B) Only 3
C) 1 and 4
D) 2, 3 and 4
E) None of these
Correct Answer: B
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