In the reaction X and Y are:

X = 1 - Butyne ; Y = 3 - Hexyne

X = 2 - Butyne ; Y = 3 - Hexyne

X = 2 - Butyne ; Y = 2 - Hexyne

X = 1 - Butyne ; Y = 2 - Hexyne

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

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The order of reactivity in nucleophilic substitution reaction is

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Important Questions on Halogen Derivatives

EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

In the reaction

Question Image

X and Y are:

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

$(i i)$

$(i i i)$

$(i v)$

HARD

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Allyl phenyl ether can be prepared by heating :

HARD

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

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

For the following compounds the correct statement(s) with respect to nucleophilic substitution reactions is(are)

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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

HARD

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major products

A

and

B

for the following reactions are, respectively:
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EASY

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The reagent required for the following two step transformation are

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

MEDIUM

Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Increasing order of reactivity of the following compounds for

S_{N} 1

substitution is:
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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

Increasing rate of

S_{N} 1

reaction in the following compounds is:
(I) Question Image

(II)

(III)

(IV)

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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 ?

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Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

The major product of the following reaction is:
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Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

An ‘Assertion’ and a ‘Reason’ is given below. Choose the correct answer from the following options:
Assertion

(A)

: Vinyl halides do not undergo nucleophilic substitution easily.
Reason

(R)

: Even though the intermediate carbocation is stabilized by loosely held

π -

electrons, the cleavage is difficult because of the strong bonding.

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Chemistry>Organic Chemistry>Halogen Derivatives>Nucleophilic Substitution Mechanism

Which of the following potential energy

(P . E .)

diagrams represents the

{SN}_{1}

reaction?

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

How do you distinguish chlorobenzene from benzyl chloride?

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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).

The order of reactivity in nucleophilic substitution reaction is

Important Questions on Halogen Derivatives

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