Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds. but not by the other?
(a) Forms acid-rain
(b) Is a reducing agent
(c) Is soluble in water
(d) ls used as a food-preservative
(a) Nitrogen dioxide and sulphur dioxide forms acid rain. ‘Acid rain’ is the rain water containing sulphuric acid and nitric acid.
(b) NO2 and SO2 act as a good reducing agent e.g. SO2 reduces halogens to halogen acid
(c) NO2 and SO, both are soluble in water.
(d) SO2 is used in the manufacture of sodium bisulphite (NaHSO3) which is used as preservative for jams, jellies and squashes.