For the following reactions: a. CH 3 CH 2 CH 2 Br + KOH → CH 3 CH = CH 2 + KBr + H 2 O b. c. Which of the following statements is correct?

a is elimination, b is substitution and c is addition reaction.

a and b are elimination reactions and c is addition reaction.

a is elimination, b and c are substitution reactions.

a is substitution, b and c are addition reactions.

In S N 2 reactions, the correct order of reactivity for the following compounds : CH 3 Cl, CH 3 CH 2 Cl, (CH 3 ) 2 CHCl and (CH 3 ) 3 CCl is :

CH 3 Cl > CH 3 CH 2 Cl > (CH 3 ) 2 CHCl > (CH 3 ) 3 CCl

CH 3 Cl > (CH 3 ) 2 CHCl > CH 3 CH 2 Cl > (CH 3 ) 3 CCl

CH 3 CH 2 Cl > CH 3 Cl > (CH 3 ) 2 CHCl > (CH 3 ) 3 CCl

(CH 3 ) 2 CHCl > CH 3 CH 2 Cl > CH 3 Cl > (CH 3 ) 3 CCl

EASY

Earn 100

Which of the following set of statements regarding the $S_{N} 1$ reaction shown by alkyl halide is correct here?
$1 .$ the $S_{N} 1$ reaction on the chiral starting material end up with racemization of the product
$2 .$ The more stable the carbocation intermediate the faster the $S_{N} 1$ reaction
$3 .$ the added nucleophile plays no kinetic role in $S_{N} 1$ reaction
$4 .$ The $S_{N} 1$ reaction involves the inversion of configuration of the optically active substrate

56.25% studentsanswered this correctly

Important Questions on Halogen Derivatives

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is:

$(i)$ Question Image

$(i i)$

$(i i i)$

$(i v)$

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major product of the following reaction is:
Question Image

EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The increasing order of the reactivity of the following halides for the

S_{N} 1

reaction is

Question Image

EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

For the following reactions:
a.

{CH}_{3} {CH}_{2} {CH}_{2} Br + KOH \to {CH}_{3} CH = {CH}_{2} + KBr + H_{2} O

Which of the following statements is correct?

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

How do you distinguish chlorobenzene from benzyl chloride?

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Neopentyl bromide, undergoes dehydrohalogenation to give alkenes even though it has no

β - H

. This is due to

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major product obtained in the following reaction is,

Question Image

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major product of the reaction between

{CH}_{3} {CH}_{2} ONa

and

{({CH}_{3})}_{3} CCl

in ethanol is

EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Which of the following compounds shall not produce propene by reaction with

HBr

followed by elimination or direct only elimination reaction?

EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Consider the reaction

{CH}_{3} {CH}_{2} {CH}_{2} Br + NaCN \to {CH}_{3} {CH}_{2} {CH}_{2} CN + NaBr

This reaction will be the fastest in

HARD

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major product of the following reaction is:
Question Image

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Compound (A),

C_{8} H_{9} Cl

, gives a white precipitate when warmed with alcoholic

{AgNO}_{3}

_. Oxidation of (A) gives an acid (B),

C_{8} H_{6} O_{4}

. (B) easily forms anhydride on heating. Identify the compound (A).

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major product of the following reaction is:

Question Image

EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Which of the following, upon treatment with tert-

BuONa

followed by addition of bromine water, fails to decolourize the colour of bromine?

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The order of

S_{N} 1

reactivity in aqueous acetic acid solution for the compounds
(1)

H_{3} C - \overset{\overset{O}{||}}{C} - C H_{2} - C l

(2)

H_{3} C - C H_{2} - C H_{2} - C l

(3)

{(H_{3} C)}_{3} C - C l

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

In a nucleophilic substitution reaction :

R - Br + {Cl}^{-} \overset{DMF}{⟶} R - Cl + {Br}^{-}

, which one of the following undergoes complete inversion of configuration ?

HARD

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Allyl phenyl ether can be prepared by heating :

EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The reagent required for the following two step transformation are

Question Image

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

In S_N2 reactions, the correct order of reactivity for the following compounds :
CH₃Cl, CH₃CH₂Cl, (CH₃)₂CHCl and (CH₃)₃CCl is :

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major product of the following reaction is:

Question Image

Important Questions on Halogen Derivatives

Learn and Prepare for any exam you want !