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Q.
Acid rain contains which of the following ?
UP CPMTUP CPMT 2008
Solution:
Acid rain is caused by large scale emission of acidic gases into the atmosphere from thermal power plants, industries and automobiles. The common ones are sulphur dioxide, nitrogen oxides $(NO_x)$, volatile organic carbons $(VOC_s)$ and hydrogen chloride. $NO_x$ are also produced in atmosphere through lightning. Sulphur dioxide and nitrogen oxides are changed in the atmosphere into sulphuric acid and nitric acid by combining with oxygen and water.