Friedel (Craft's Alkylation and Acylation,...) NEET Questions

Organic Chemistry - Hydrocarbons

Friedel (Craft's Alkylation and Acylation,...) MCQ Questions


1.
Which of the following reactions is an example of Friedel-Craft's alkylation?
A.
Bromination of benzene
B.
Acylation of benzene with an acyl halide
C.
Nitration of benzene
D.
Alkylation of benzene with an alkyl halide
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ANSWER :
D. Alkylation of benzene with an alkyl halide
2.

The electrophilic reagent in Friedel-Craft's acylation is

A.

Hydrogen ion (H+)

B.

Alkyl cation (R+)

C.

Benzyl cation

D.

Acylium ion (RCO+)

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ANSWER :

D. Acylium ion (RCO+)

3.
What is the effect of electron-donating groups on the reactivity of substituted benzene in Friedel-Craft reactions?
A.
Makes the reaction non-electrophilic
B.
Decreases reactivity
C.
No effect
D.
Increases reactivity
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ANSWER :
D. Increases reactivity
4.

In the Friedel-Craft’s alkylation of benzene, which catalyst is generally used?

A.

H2SO4

B.

FeCl3

C.

NaOH

D.

AlCl3

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ANSWER :

D. AlCl3

5.
Which of the following is a possible product of Friedel-Craft’s acylation?
A.
Benzaldehyde
B.
Phenol
C.
Toluene
D.
Phenyl ketone
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ANSWER :
D. Phenyl ketone
6.
In Friedel-Craft’s alkylation, the alkyl group attached to the benzene ring is
A.
Nucleophilic
B.
Electrophilic
C.
Neutral
D.
Ionic
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ANSWER :
B. Electrophilic