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

HARD

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2, 2-dimethyl-1-chloropropane undergo nucleophilic substitution reaction to produce an optically inactive product. Which of the following is correct regarding the product ?
(i) Formation of product takes place through $S_{N} 1$ reaction.
(ii) The product is optically inactive due to internal compensation.
(iii) The product is optically inactive due to external compensation.
(iv) The carbocation is not an intermediate in the given reaction.
Choose the correct option.

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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

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

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?

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:

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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

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