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Statements about simple, fractional, steam and reduced-pressure distillation

This type of question, asked 5 times: 2021 Paper 22, 2021 Paper 25, 6 Apr 2024, 2 Apr 2026 S1, 8 Apr 2026 S2. All 5 questions below, oldest first.

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  1. Question 1

    2021 Paper 22

    47
    Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): A simple distillation can be used to separate a mixture of propanol and propanone. Reason (R): Two liquids with a difference of more than 20∘C20^{\circ}C in their boiling points can be separated by simple distillations. In the light of the above statements, choose the most appropriate answer from the options given below:

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  2. Question 2

    2021 Paper 25

    40
    Given below are two statements: Statement I: A mixture of chloroform and aniline can be separated by simple distillation Statement II: When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point In the light of the above statements, choose the most appropriate answer from the options given below

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  3. Question 3

    6 Apr 2024

    38
    Which of the following statements are correct? (A) Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point. (B) Aniline can be purified by steam distillation as aniline is miscible in water. (C) Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope. (D) An organic compound is pure, if mixed M.P. is remained same. Choose the most appropriate answer from the options given below:

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  4. Question 4

    2 Apr 2026 S1

    38
    Given below are two statements : Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation. Statement (II) : An azeotropic mixture cannot be separated by fractional distillation. In the light of the above statements, choose the correct answer from the options given below :

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  5. Question 5

    8 Apr 2026 S2

    37
    Given below are two statements : Statement I: Vapors of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation. Statement II : The vapors rising up in the fractionating column become richer in high boiling component of the mixture. In the light of the above statements, choose the correct answer from the option given below :

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