CBSE Class 10 Answered
Q1. Which of the following are exothermic processes?(i) Reaction of water with quick lime(ii) Dilution of an acid(iii) Evaporation of water(iv) Sublimation of camphor (crystals)
2 points
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (iii) and (iv)
Asked by 4073.stanzin.ixb | 26 Jul, 2021, 08:24: AM
Expert Answer
All combination reactions are exothermic in nature. So (i) Exothermic
(ii) Water needs energy from surroundings to evaporate. So, Evaporation is endothermic.
(iii) Sublimation of Camphor required energy so it is endothemric process.
So, Only(i) is exothermic.
Answered by Ravi | 26 Jul, 2021, 05:18: PM
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