CBSE Class 10 Answered
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 4078.mujtabaali.ixb | 26 Jul, 2021, 08:26: AM
Expert Answer
Correct option is A
Evaporation of water and sublimation of camphor are examples of endothermic reactions.
(i) Reaction of water with quicklime and
CaO +H2 O⟶Ca(OH)2 +Heat
(ii) Dilution of acid are the exothermic reaction.
H2SO4 +H2O⟶H3O++HSO4− +Heat
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