Fuels and Combustion
Benzene is used

As a motor fuel
As a perfume
As an explosive
For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR)

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Fuels and Combustion
Fixed carbon in coal is defined as

The one which is present in the residue after combustion
Hundred minus the percentage of volatile matter, ash and moisture
The total quantity of carbon present in the coal
That present in volatile matters

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