MCQ
The atom or the group of atoms by which the characteristic reactions of organic compounds are determined, that atom or group of atoms is called $ ........$
  • A
    Hydrocarbon
  • Functional group
  • C
    Atom
  • D
    Compound

Answer

Correct option: B.
Functional group
Functional groups are specific substituents or moieties within molecules that are responsible for the characteristic chemical reactions of those molecules.
Examples : $\ce{−OH, −COOH, −COOR}$ etc.
Hence, the atom or the group of atoms by which the characteristic reactions of organic compounds are determined, that atom or group of atoms is called functional group.

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