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Which of the following is used to reduce phenol vapors to benzene?

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in Chemistry – Class 11 by (148k points)
Which of the following is used to reduce phenol vapors to benzene?

(a) Hydrogen gas

(b) Oleum

(c) Zinc dust

(d) Anhydrous AlCl3

This question was addressed to me in a job interview.

This question is from Aromatic Hydrocarbon topic in division Hydrocarbons of Chemistry – Class 11

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Right option is (c) Zinc dust

Easy explanation: Phenol is reduced to benzene by passing its vapors over heated zinc dust. In this reaction, phenoxide ion and a proton is formed. This proton accepts an electron from zinc and forms ZnO and the phenoxide ion gets converted to benzene.

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