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Fractional distillation is different from distillation because of the presence of ____________

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Fractional distillation is different from distillation because of the presence of ____________

(a) Fractionating column

(b) Condenser

(c) Distillation flask

(d) Conical flask

I have been asked this question during an interview.

My question comes from Fractional Distillation in division Methods of Purification of Engineering Chemistry I

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The correct answer is (a) Fractionating column

For explanation: Fractional distillation is different from distillation because of the presence of fractionating column. A laboratory fractionating column is a piece of glassware used to separate vaporized mixtures of liquid compounds with close volatility.

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