Isomerism due to shifting of proton from one atom to another in a same molecule is known as:

Correct answer: B. Tautomerism

  • A. Metamerism
  • B. Tautomerism
  • C. Position
  • D. Functional

Explanation

A tautomer of a compound refers to the isomer of the compound which only differs in the position of protons and electrons so, B is correct.In the rest of the options (A, C, and D), there is a difference in the positioning of whole atoms and not just protons, which is why these options are incorrect.

This question appeared on the NUMS 2020 paper, which you can sit online with every answer explained.

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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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