Q54: HPSC Prelims 2021 GS-II — Previous Year Question with Answer

Which of the following is/are correct? 1. Evaporation is a surface phenomenon, i.e. only the particles present at the surface of a liquid change into the vapour state. 2. Boiling is a bulk phenomenon, i.e. particles from the whole liquid mass change into the vapour state. 3. Deposition is the direct change of a substance from the gaseous state to the solid state without passing through the liquid state. 4. The state of matter can be changed only by changing its temperature. Choose the correct answer: (a) 1, 3 and 4 (b) 1, 2 and 3 (c) 1, 2 and 4 (d) 2, 3 and 4