define refining what are the various constituents of petroleum.write their uses
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Petroleum gas, petrol, diesel, kerosene, paraffin wax, lubricating oil are obtained by refining petroleum. Coal and petroleum resources are limited. We should use them judiciously.
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The process of separating the various constituents/ fractions of petroleum is known as refining. It is carried out in a petroleum refinery.At the refinery, the crude oil mixture is 'fractionated' into different components by fractional distillation.
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