Write the full forms of the following:

(a) LPG (b) CNG

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

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

Which of the two diffuses faster: a liquid or a gas?

Which of the two diffuses slower: bromine vapour into air or copper sulphate into water?