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Chemical Properties of Amines

The reagent u...

Question

The reagent used for converting tetrabromoethane into ethyne is:

A

Alcoholic KOH

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B

Conc.

H_{2} S O_{4} at 170^{o} C

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C

Aqueous potash

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D

Zinc dust

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Solution

The correct option is D Zinc dust
Alc. KOH is used in preparation of acetylene from dihalides and Zn dust is used in preparation of acetylene from tetra halides.
Reaction:
$B r_{2} C H_{2} - C H_{2} B r_{2} + 2 Z n △ - \to H - C \equiv C Acetylene - H + 2 Z n B r$
1,1,2,2-tetrabromoethane

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Chemical Properties of Amines

Standard XII Chemistry

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