Question

What type of isomerism is shown by butane and isobutene?

  (a) position isomerism
  (b) functional group isomerism
  (c) chain isomerism
  (d) metamerism.​

Answer 1

A NSWER
n-butane and iso-butane have the same molecular formula but different carbon chain in main chain. So, they are chain isomers.
n-butane: CH
3
​
CH
2
​
CH
2
​
CH
3
​
; IUPAC name: butane
iso-butane: CH
3
​
CH(CH
3
​
)CH
3
​
; IUPAC name: 2-methylpropane

Answer 2

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What type of isomerism is shown by butane and isobutene?

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(c) chain isomerism

chain isomerism is shown by butane and isobutane.