Sources of energy class 8

Which is an almost pure form of carbon?

• Coal tar

• Coal gas

• Coke

• None of these

Which gas is obtained during the process of coal?

• Carbon dioxide

• Coal gas

• Carbon monoxide

• Sulphur dioxide

Petroleum is mixture of

• Petrol

• Diesel

• Petroleum gas

• All of these

Gas produced on burning of fossil fuels is

• Hydrogen

• Oxygen

• Coal gas

• Carbon dioxide

Which of them is used as solvent for dry cleaning?

• Diesel

• Petrol

• Kerosene

• Wax

Naphthalene balls are obtained from

• Coal gas

• Petroleum

• Coke

• Coal tar

Petroleum is known as

• Liquid treasure

• Liquid platinum

• Liquid gold

• Black gold