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By the efforts made by Government, the air quality of Delhi has significantly improved. A substantial fall has been found in Delhi between 1997 and 2005, for theA. `CO_2` levelB. `SO_2` levelC. `NO_2` levelD. Both A and B |
Answer» Correct Answer - D By the efforts made by Government, the air quality of Delhi has significantly improved. A substantial fall has been found in Delhi between 1997 and 2005, for the `CO_2` and `SO_2` level. |
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