Which one of the following group of gases contribute to the 'Green House Effect'?
A. Carbon dioxide and Methane
B. Ammonia and Ozone
C. Carbon monoxide and Sulphur dioxide
D. Carbon tetrafluoride and Nitrous oxide
Answer: Option A
A. Carbon dioxide and Methane
B. Ammonia and Ozone
C. Carbon monoxide and Sulphur dioxide
D. Carbon tetrafluoride and Nitrous oxide
Answer: Option A
The term 'brown air' is used for
A. Acid fumes
B. Photochemical smog
C. Sulphurous smog
D. Industrial smog
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