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Which of the following is a fossil fuel?
Identify the fuel that leaves more smoke and ash on burning.
Any one of the above
What do fuels combine with to produce heat and light?
By which of the given processes is coal formed?
Which of the forms of coal has highest percentage of carbon?
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
Which of the following properties is NOT a characteristic of a good fuel?
High Ignition temperature
Causes minimum pollution
Which of the following has the highest boiling point?
Where is kerosene mainly used?
In laying down roads
As fuel in jet engines
In making water proof materials
In furnaces of industries
How is coke superior than coal as a fuel?
Coal is mineral and burns releasing smoke while coke is a residue
Coal is an impure form of carbon, while coke is a pure form of carbon
Only coal consists of atoms of carbon, hydrogen , oxygen and sulphur while coke mainly consists of carbon
All of the above