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Question

Which of the following hydrocarbons can show isomerism?


A

C2H4

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B

C2H6

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C

C3H8

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D

C4H10

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Solution

The correct option is D

C4H10


The explanation for the correct option:

D) C4H10

  • The compounds having the same molecular formula but different structures are known as isomers, and the property is known as isomerism.
  • Butane (C4H10) is the lowest hydrocarbon which shows isomerism.
  • Butane has two isomers-
    i) n-butane and
    ii) Isobutane

The explanation for the incorrect options:

A) C2H4

  • This is Ethene. It does not have any isomer.
  • The structure of Ethene is as follows-

B) C2H6

  • This is Ethane. It does not have any isomer.
  • Its structure is as follows-

C) C3H8

  • This is Propane. It does not have any isomer.
  • Its structure is as follows-

Hence, option D) is correct. Butane (C4H10) shows isomerism.


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