Question

Q.1 Fill in the blanks :
1.)__________do not have fixed melting and boiling point.

​

Answer 1

Explanation:

________________

AIR do not have

fixed melting and

boiling point.

________________

The boiling point of a substance

is where the liquid phase

changes into gas phase. The

melting point of a substance is

where the solid phase changes

into the liquid phase. Since air

is a mixture of gases, so, all the

different gases have different

melting and boiling points. So,

air has no boiling point and it

also has no melting point.

________________

Answer 2

Air do not have fixed melting and boiling point.