Chemistry Fundamental Principles of Organic Chemistry UHS 2024
PMDC Verified Question 4 of 83
1-Butene and 2-Butene are showing which type of isomerism?
A
Functional Group
B
Metamerism
C
Position
D
Chain
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Position
Concept:

Isomers with the same parent chain and functional group, differing only in the numerical locant (position) of that group, are position isomers.

Solution:

  • 1-butene: The double bond (alkene functional group) is between C1 and C2.


  • 2-butene: The double bond is between C2 and C3.


  • The structural framework is identical; only the position varies. Hence, position isomerism.


Why other options are incorrect:

They do not differ in skeleton (chain) or in the nature of the functional group.

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