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Question

When ethyne is passed through a red hot tube, is formed

A
Cyclohexane
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B
Methylbenzene
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C
Benzene
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D
Ethane
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Solution

The correct option is C Benzene
Cyclic polymerisation of Alkynes: Ethyne on passing through a red hot iron tube at 873 K undergoes cyclic polymerisation to produce one molecule of benzene.

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