Classification of Isomerism NEET Questions

Organic Chemistry - Hydrocarbons

Classification of Isomerism MCQ Questions


7.
Which of the following is an example of a sub-type of stereoisomerism relevant to unsaturated hydrocarbons?
A.
Functional isomerism
B.
Chain isomerism
C.
Position isomerism
D.
Geometrical (cis-trans) isomerism
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ANSWER :
D. Geometrical (cis-trans) isomerism
8.
The type of structural isomerism in which compounds have the same molecular formula but differ in the arrangement of carbon atoms in the main chain (i.e., differ in the carbon skeleton) is called:
A.
Chain isomerism
B.
Geometrical isomerism
C.
Functional isomerism
D.
Position isomerism
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ANSWER :
A. Chain isomerism
9.
n-Butane and isobutane (2-methylpropane), both having the molecular formula C₄H₁₀, are examples of which type of isomerism?
A.
Geometrical isomerism
B.
Position isomerism
C.
Chain isomerism
D.
Optical isomerism
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ANSWER :
C. Chain isomerism
10.
How many chain (structural) isomers are possible for pentane (C₅H₁₂)?
A.
3
B.
4
C.
5
D.
2
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ANSWER :
A. 3
11.
How many chain (structural) isomers are possible for butane (C₄H₁₀)?
A.
1
B.
2
C.
3
D.
4
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ANSWER :
B. 2
12.
The number of possible structural (chain) isomers generally increases as the:
A.
Molecule becomes aromatic
B.
Number of hydrogen atoms decreases
C.
Number of carbon atoms in the hydrocarbon increases
D.
Molecule becomes fully saturated with double bonds
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ANSWER :
C. Number of carbon atoms in the hydrocarbon increases