In which of the following processes, change in the state of matter involves absorption of energy?
A. Boiling
B. Freezing
C. Condensation
D. Melting

A and B only

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A and D only

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A, B and C only

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A only

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Solution

The correct option is B A and D only
There will be an absorption of heat energy in the process of melting and in boiling. This energy is used the material to break interparticle force of attraction between particles and hence, phase change occurs.
Whereas in condensation as well as in freezing, heat energy is released.

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In which of the following processes does a change in state involve absorption of heat?
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In which of the following processes do the change in the states of matter is endothermic?
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