Coal and petroleum

Which among these is man-made?

• Air

• Water

• Petroleum

• Cloth

Strike out which is inexhaustible.

• Petrol

• Water

• Sunlight

• Coal

Which among these is not exhaustible?

• Air

• Wild-life

• Natural gas

• Natural gas

Coal, petroleum and natural gas are formed from dead remains of organisms over millions of year. So, they are also called:

• Clean fuels

• In-exhaustible fuels

• Cheap fuels

• Fossil fuels

Which amng these is not an use of coal?

• In cooking

• In-running thermal powers

• In driving steam engines

• In hydroelectric dam

Process of conversion of dead organisms into coal is called:

• Precipitation

• Fossilisation

• Carbonification

• Bilogical magnification

Which among these is not a product of coal?

• Coke

• Coal gas

• Coal tar

• Petrol

Napthalene balls that we use in cloths to repel insects come from:

• Coal tar

• Crude oil

• Coke

• Soil

Light automobiles like motorcycle and scooter run on:

• CNG

• LNG

• Petrol

• Disel

Heavy mtor vehicle like truck and tractors run on:

• Petrol

• Diesel

• Electricity

• Sun-light