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

Organic Chemistry - Hydrocarbons

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


13.
Anthracene contains how many fused benzene rings?
A.
Four
B.
Three (linearly fused)
C.
Five
D.
Two
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ANSWER :
B. Three (linearly fused)
14.
Aromatic hydrocarbons are also known as:
A.
Paraffins
B.
Olefins
C.
Arenes
D.
Acetylenes
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ANSWER :
C. Arenes
15.
How many position isomers are possible for disubstituted benzene with two identical substituents?
A.
4
B.
6
C.
3 (ortho, meta, para)
D.
2
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ANSWER :
C. 3 (ortho, meta, para)
16.
The IUPAC name of phenylacetylene (C₆H₅–C≡CH) is:
A.
Benzylethyne
B.
Vinylbenzene
C.
Phenylacetylene
D.
Ethynylbenzene
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ANSWER :
D. Ethynylbenzene
17.
Benzene was first isolated in 1825 by:
A.
Friedrich Kekulé
B.
Michael Faraday
C.
Antoine Lavoisier
D.
August Hofmann
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ANSWER :
B. Michael Faraday
18.
Benzaldehyde has the structure C₆H₅–CHO. Its IUPAC name is:
A.
Benzaldehyde (retained IUPAC name) / Benzenecarbaldehyde
B.
Phenylcarboxaldehyde
C.
Phenylformaldehyde
D.
Methanoylbenzene
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ANSWER :
A. Benzaldehyde (retained IUPAC name) / Benzenecarbaldehyde