. When water changes its state from liquid state to vapour state


When water changes its state from liquid state to vapour state,

a. heat is given out.

b. heat is absorbed.

c. heat is given out and then absorbed.

d. there is no exchange of heat between the system and the surroundings.

 

 

Best Answer

Ans. b

Explanation: Water requires heat when it changes from liquid to vapour state. When heat is given to it, its molecules gain energy and get converted into steam, which is in vapour state.

 

 

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