Asked in PMC Practice Test 26 (2021) 2021Moderate

The isomerism in which compounds have different number of carbon atoms on both sides of the functional group is called as:

Correct answer: B. Metamerism

  • A. Tautomerism
  • B. Metamerism
  • C. Geometrical isomerism
  • D. Position isomerism

Explanation

b) Metamerism: Metamerism is a type of isomerism where two or more compounds have the same molecular formula but differ in the arrangement of alkyl groups (or other similar groups) attached to the functional group. It is not related to the different number of carbon atoms on both sides of the functional group.

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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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