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10 questions
What is known as black gold?
Silver
Coal
diamond
Petroleum
Identify the fuel that leaves more smoke and ash on burning.
Solid fuel
Liquid fuels
Gaseous fuels
Any one of the above
By which of the given processes is coal formed?
Carbonisation
Distillation
Vapourisation
Evaporation
What are the most common sources of energy used in automobiles?
Wood and coal
Petroleum and diesel
LPG and cow dung
Natural gas and coal
Where is kerosene mainly used?
In laying down roads
As fuel in jet engines
In making water proof materials
In furnaces of industries
Name the process which is used to separate various constituent of petroleum
Lubrication
Refining
Paraffin
None of these
Heat and _____________ transformed living things into fossil fuels.
pressure
air
gas
water
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