The rain becomes acidic because W, sulphur dioxide
and X dissolve in rain drops to form Y, Z and nitric
acid respectively. W turns lime water milky. Identify
W, X, Y and Z respectively.
A Carbon monoxide, Nitrogen, Calcium hydroxide, Sulphur
B Carbon monoxide, Nitrogen oxide, Carbon dioxide, Sulphuric acid
C Carbon dioxide, Nitrogen dioxide, Carbonic acid, Sulphuric acid
D Carbon dioxide, Nitrogen oxide, Calcium hydroxide, Sulphur.