(a) Volume of ice …………. when it melts.

(b)Decrease in pressure over ice ………….. its melting point.

(c)Increase in pressure ………..the boiling point of water.

(d)A pressure cooker is based on the principle that boiling point of water increases with the …………..

(e)The boiling point of water is defined as ………………………..

(f) Water can be made to boil at 115°C by…………….. pressure over its surface.

Solution:

(a) decreases

Volume of ice decreases when it melts.

(b) increases

Decrease in pressure over ice increases its melting point.

(c) increases

Increase in pressure increases the boiling point of water.

(d) increase in pressure

A pressure cooker is based on the principle that the boiling point of water increases with the increase in pressure.

(e) the constant temperature at which water changes to steam.

The boiling point of water is defined as the constant temperature at which water changes to steam.

(f) increasing

Water can be made to boil at 115⁰ C by increasing pressure over its surface.