Brass is an alloy of copper and :

A substance that dissolves while forming a solution is called:

Turpentine is a solvent made from :

Which of the following is affected little by temperature?

The process of splitting up of the atom to release a lot of energy is called:

Which of the following is a cause of acid rain?

Which gas is given off when waste materials decay?

Sulphur dioxide and oxides of -------------- combine with water vapours in the clouds to produce acid rain.

Which is a nuclear fuel ?

Plant material and animal waste that can be used as a fuel is:

The largest solar furnace in the world is located in :

When fossil fuels are burned , large quantity of which gas is released in air?

About a fifth of all the electricity used today is generated by: