Practice-1: Matter around Us

Evaporation and Vaporisation happens at same temperature. Yes. No. Sometimes. Evaporation happens after vaporisation.

Freezing and melting happens at same temperature. No. Yes. Sometimes they happen at same temperature.

In any conversion or transformation of energy heat is always lost. Energy can be lost or found. There is no loss of energy during transformation of energy. sometimes some energy is degraded as heat energy.

Water has higher specific heat capacity than oil. Yes to some extent but not always. No oil has higher specific heat capacity. Yes Water has higher.

What does it mean water has higher specific heat capacity?. It means water can cool faster. It means water can get heated faster. It means water can get heated slowly and hold for long time. It means water can get heated slowly and does not hold for long time.

Why do we feel fresh when we apply water on face?. That is because water absorbs heat by evaporating and we feel cool. That is because water remains on surface and vaporises after some time. None of the above.