Acid rain is caused due to pollution of atmosphere by
A. oxides of carbon and nitrogen
B. oxides of nitrogen and sulphur
C. oxides of nitrogen and phosphorous
D. none of the above
Answer: Option B
A. oxides of carbon and nitrogen
B. oxides of nitrogen and sulphur
C. oxides of nitrogen and phosphorous
D. none of the above
Answer: Option B
The term 'brown air' is used for
A. Acid fumes
B. Photochemical smog
C. Sulphurous smog
D. Industrial smog
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