All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 16

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IMPORTANT

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In the following pairs of halogen compounds, which compound undergoes $S_{N} 2$ reaction faster?

and.

Important Questions on Haloalkanes and Haloarenes

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IMPORTANT

All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 17

An alcohol having the molecular formula

C_{4} H_{10} O

is optically active. What is its structure?

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All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 18

What happens when

{CH}_{3} — Br

is treated with

KCN

?

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IMPORTANT

All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 19

A solution of

KOH

hydrolyses

{CH}_{3} {CHClCH}_{2} {CH}_{3}

and

{CH}_{3} {CH}_{2} {CH}_{2} {CH}_{2} Cl

. Which one of these is more easily hydrolysed?

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All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 20

What is the IUPAC name of DDT? Why is its use banned in many countries?

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All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 21

Account for the following:

p

-dibromobenzene has a higher melting point than

o -

dibromobenzene.

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All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 21

N-butyl bromide reacts faster than t-butyl bromide by

S_{N} 2

mechanism. Explain why?

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All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 22

Why is iodination of benzene difficult?

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IMPORTANT

All In One ISC Chemistry Class 12>Chapter 10 - Haloalkanes and Haloarenes>Chapter Practice>Q 23

Write the mechanism of the following reaction.

${CH}_{3} {CH}_{2} OH \overset{HBr}{\to} {CH}_{3} {CH}_{2} Br + H_{2} O$