1.

Which one among thenfollowing has been included as a parameter for the first time under thenNational Ambient Air Quality Standards (NAAQS), based on central pollutionnControl Board and IIT, Kanpur research, WHO guidelines and European Unionnlimits and practices?

A. Sulphur dioxide
B. Oxides of nitrogen
C. Ozone
D. Carbon monoxide
Answer» D. Carbon monoxide


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