Question

Which of the following is(are) an endothermic process(es)?

1. Dilution of sulphuric acid
2. Sublimation of dry ice
3. Condensation of water vapours
4. Evaporation of water

Options

• (i) and (iii)

• (ii) only

• (iii) only

• (ii) and (iv)

Answer 1

(ii) and (iv)

Explanation - 

Both sublimation of dry ice (ii) and evaporation of water (iv) are of endothermic nature.