NDA 2022 Chemistry question

Refining of petroleum is carried out using which one of the following techniques?

(A)Evaporation
(B)Fractional distillationCorrect
(C)Separating funnel
(D)Sublimation

Answer: (B)

Solution

Crude petroleum is a mixture of many hydrocarbons with different boiling points. In a fractionating column the mixture is heated and the fractions (petroleum gas, petrol, kerosene, diesel,

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Question ID VK-032049