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
(a) (i) and (iii)
(b) (ii) only
(c) (iii) only
(d) (ii) and (iv)


Correct Answer: (d) (ii) and (iv)

Explanation: Change of solid to gas or liquid to gas absorbs heat hence sublimation of dry ice and evaporation of water is an endothermic reaction.

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Updated on: 10-Oct-2022

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