Asked in PMC Practice Test 18 (2021) 2021

The number of isomers of C4H10 are:

Correct answer: A. 2

  • A. 2
  • B. 4
  • C. 6
  • D. 5

Explanation

Butane has two isomers. The two chain isomers of butane (C4H10) are n-butane and isobutane. Hence, A is the correct option

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About Isomerism

Isomerism occurs when compounds have the same molecular formula but different atom arrangements or spatial orientations. The content includes chain, position, functional, metameric and tautomeric isomerism, along with geometrical and optical isomerism, including cis-trans forms, E/Z notation, chirality and enantiomers.

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