1.

Explain the following : (a) The surrounding becomes pleasantly warm when water in a lake starts freezing in cold countries. (b) The heat supplied to a substance during its change of state does not cause any rise in its temperature.

Answer»

Explain the following :

(a) The surrounding becomes pleasantly warm when water in a lake starts freezing in cold countries.

(b) The heat supplied to a substance during its change of state does not cause any rise in its temperature.




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