Aromatic Hydrocarbons (Nomenclature, Benzene - Structure and Aromaticity:...) NEET Questions

Organic Chemistry - Hydrocarbons

Aromatic Hydrocarbons (Nomenclature, Benzene - Structure and Aromaticity:...) MCQ Questions


13.
Which of the following is a characteristic property of aromatic compounds?
A.
They exhibit addition reactions
B.
They exhibit substitution reactions
C.
They are easily oxidized
D.
They do not react with electrophiles
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ANSWER :
B. They exhibit substitution reactions
14.
What happens during the halogenation of benzene?
A.
Benzene loses its aromaticity
B.
An electrophile (X2) reacts with benzene
C.
The reaction forms a non-aromatic intermediate
D.
Both B and C are correct
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ANSWER :
D. Both B and C are correct
15.
In the mechanism of electrophilic substitution, what does the electrophile attack?
A.
Electron pair in the benzene ring
B.
Hydrogen atom in the benzene ring
C.
Delocalized pi electrons in the benzene ring
D.
None of the above
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ANSWER :
C. Delocalized pi electrons in the benzene ring
16.
Which compound is formed when benzene undergoes halogenation with chlorine?
A.
Benzene chloride
B.
Chlorobenzene
C.
Phenol
D.
Benzene hydrochloride
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ANSWER :
B. Chlorobenzene
17.
Which of the following is true for the structure of benzene?
A.
There are six single bonds between the carbon atoms.
B.
There are six double bonds between the carbon atoms.
C.
There is alternating single and double bonding between the carbon atoms.
D.
All bonds are equivalent and are in resonance.
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ANSWER :
D. All bonds are equivalent and are in resonance.
18.

Which of the following is used in the nitration of benzene?

A.

FeCl3

B.

HNO3 + H2SO4

C.

Cl2 + FeCl3

D.

Bromine water

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ANSWER :

B. HNO3 + H2SO4