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Question

Which among the following method is used to obtain paraffin, diesel and fuel oil from crude oil?

A
Centrifugation
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B
Evaporation
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C
Distillation
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D
Fractional distillation
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Solution

The correct option is D Fractional distillation
If the difference between the boiling points of the mixture of miscible liquids is less than 25 C, then fractional distillation is used to separate components of the mixture.

Crude oil which is drilled out from the depth of the Earth, is a mixture of miscible liquids (paraffin, diesel, fuel oil, etc.) and the difference in the boiling points of these components is less than 25 C.
Hence, fractional distillation is the method used to obtain the different components (paraffin, diesel, fuel oil etc.) from crude oil.

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