If the trees are cut down, the amount of rainfall:

Which is the national animal of India?

Biogas is produced from:

National parks and sanctuaries are created by the Government to protect and preserve:

Forest has a major role in making the air clean by taking in:

The resources if managed wisely, maintain themselves or get replaced are called:

Coal, kerosene and petrol are used as:

Liquefied petroleum gas (LPG) is used for:

a) Running vehicles

b) Cooking

c) Making electricity

Which of the following is used for making electrical goods?

Which of the following are the commonly known precious metals?