MCQOPTIONS
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| 1. |
मोबाइल दहन खाते |
| A. | 10-20% of air pollution |
| B. | 40-50% of air pollution |
| C. | 50-60 % of air pollution |
| D. | 5-10 % of air pollution |
| Answer» B. 40-50% of air pollution | |