Compare LPG and CNG as a fuel with coal.

LPG (Liquid Petroleum Gas) and CNG (Compressed Natural Gas) are:

1) Alternative and also the new forms of energy.

2) They are easy to handle.

3) They are easy to transport.

4) They do not produce ash after burning.

Coals are:

1) The traditional source of energy

2) Bulky and hence difficult to handle.

3) They are difficult to transport.

4) They produce a large amount of ash and smoke after burning.