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Worksheets

Arenes

Total questions: 10

Worksheet time: 12mins

Name
Class
Date
1.

Nitration of a benzene molecule shows reaction of

a)

electrophilic substitution

b)

addition reaction

c)

nucleophillic substitution

d)

all of them

2.

The presence of benzene (C6H6) ring in an alkylarene can affect the characteristic reactions of its

a)

alkyl-side chain

b)

beta chain

c)

alpha chain

d)

all of them

3.

Arenes are polar. State true or false

a) True

b) False

a)

True

b)

False

4.

Which statement about the reaction of benzene with Cl2 in the presence of AlCl3 is incorrect?

a)

Chlorobenzene is formed

b)

AlCl3 is a catalyst

c)

The mechanism goes via an intermediate cation

d)

The mechanism is electrophilic addition

5.

Which one of the following describes the mechanism of the reaction of aqueous NaOH with 2,4,6-trinitrochlorobenzene to form picric acid

a)

nucleophilic substitution

b)

electrophilic addition

c)

addition and elimination

d)

electrophilic substitution

6.

The reaction of benzene with Methyl chloride under Friedel-Crafts conditions leads to which of the following?

a)

Methylbenzene and 1,2-dimethylbenzene as the only products

b)

A mixture of methylbenzene, 1,2-dimethylbenzene and 1,4-dimethylbenzene

c)

1,2-Dimethylbenzene and 1,4-dimethylbenzene as the only products

d)

Methylbenzene (toluene) as the only product

7.

Which statement about benzene is incorrect?

a)

The C6 ring is planar

b)

Each C atom is sp2 hybridized

c)

The C–C π-bonding is delocalized

d)

The reactivity of the benzene reflects the presence of carbon-carbon double bonds

8.

Which statement about the reaction of benzene with 1-chloropropane in the presence of AlCl3 is incorrect?

a)

AlCl3 acts as a catalyst

b)

Benzene undergoes electrophilic substitution

c)

In the presence of AlCl3, 1-chloropropane reacts to give a carbenium ion

d)

The major product is n-propylbenzene

9.
a)

A

b)

B

c)

C

d)

D

10.

With respect to the electrophilic aromatic substitution of benzene which of the following is not true?

a)

A non-aromatic intermediate is formed

b)

Benzene acts as an electrophile

c)

A proton is lost in the final step

d)

Resonance forms are important