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JEE Main 201610 AprilOnline

Exam: JEE Main
Year: 2016
Date: 10 April
Mode: Online
Subject: Chemistry
Chapter: p Block Elements (Group 13 & 14)

JEE Main 2016 · 10 April · Online · Chemistry · p Block Elements (Group 13 & 14)

Identify the reaction which does not liberate hydrogen

Identify the reaction which does not liberate hydrogen

Options

AReaction of lithium hydride with ${B}_{2}{H}_{6}$ .
BElectrolysis of acidified water using $Pt$ electrodes.
CReaction of zinc with aqueous alkali.
DAllowing a solution of sodium in liquid ammonia to stand.

Correct answer

A. Reaction of lithium hydride with ${B}_{2}{H}_{6}$ .

Step-by-step solution

LiH

react with

{B}_{2}{H}_{6}

to produce boron lithium hydride.
The reaction proceeds in the medium of ester and complex form.

2LiH + {B}_{2}{H}_{6} \to 2Li [ B{H}_{4} ]

So do not liberate

{H}_{2}

gas.

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