Which among the following changes are exothermic or endothermic in nature?
(a) Decomposition of ferrous sulphate
Ans. Endothermic
(b) Dilution of sulphuric acid
Ans. Exothermic
(c) Dissolution of sodium hydroxide in water
Ans. Exothermic
(d) Dissolution of ammonium chloride in water
Ans. Endothermic
