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A mixture of benzene and aniline can be separated by

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Important Questions on Purification of Organic Compounds

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Which of the following statements are true for the separation of the mixture of naphthalene and benzophenone?

a The mixture can be separated by column chromatography.

b The mixture is separated over a column of alumina.

c Petroleum ether containing benzene is used as an eluent. 

d Elution of the column will first elute naphthalene and then benzophenone.

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The compounds which decompose at their boiling points can be purified by using which of the following?
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The stationary and mobile phases in column chromatography, respectively, are:

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Four hypothetical binary mixtures are given below with their boiling points (bp). Which of them can be separated by simple distillation?

a A bp=78°C+B bp=85°C

b A bp=78°C+B bp=90°C

c A bp=78°C+C bp=20°C

d A bp=78°C+D bp=130°C

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The mixture of benzene and chloroform can be separated by

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Which of the following are purified by vacuum distillation?

(i) Ethanol             (ii) NaCl

(iii) Glycerol          (iv) Cane sugar

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A mixture of methyl alcohol and acetone can be separated by