A substance has neither a fixed shape nor a fixed volume. State whether it is a solid ,a liquid or a gas.

Name the physical state of matter which can be easily compressed.

‘A substance has a definite shape as well as a definite volume’. Which physical state is represented by this statement?

Name two gases which are supplied in compressed form in homes and hospitals.

Write the full forms of the following:

(a) LPG (b) CNG