Question

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Answer 1

Answer:

(a) 1 and 2

I gave the answer first but the other guy gave some other answer so i will justify mine.

Reaction of water with lime is exothermic because dilution of acids are generally exothermic in nature and quick lime is an acid.

Dilution of acid as i already said is exothermic.

Its definitely not evaporation because water is being transformed to vapour by absorbing heat energy and that is endothermic not exothermic.

Sublimation of camphor is also by absorbing energy and is endothermic

∴ 1 and 2 are exothermic and option (a) is right

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Answer 2

Answer:

(b) 2 and 3.is your answer