We can get vapour state of a substance through the process of:(i) boiling(ii) evaporation(iii) sublimation(iv) regelation

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(i, ii)

(i, ii, iii)

(i, iii, iv)

(ii, iii, iv)

answer is B.

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Detailed Solution

BY heating liquid , by the free evaporation and by direct conversion from solid to gas we can get vapour.

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