Which of these is a merit of commodity approach

Spirit in contact with body gives cool sensation because it is:

The major component in the LPG is 

When water itself combines chemically with some element or mineral it is called 

Conduction band electrons have more mobility than holes because they

The element used for making solar cells is

Which one of the following is known as the brown coal?

Which mineral is the ore Of aluminium?

The chief source of naphthalene is 

The total energy of revolving electron in an atom 

KMN04 can be used as a/an