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MHT CET202617 April 2026Morning ShiftChemistryGeneral Organic ChemistryActual

Which from following statements is NOT true about homologous series?

Options

  1. AEach member of a series has same functional group.
  2. BEach member has same type of carbon skeleton.
  3. CEach member differs by ethylene group from next member.
  4. DAll members of series possess similar chemical properties.

Correct answer

C. Each member differs by ethylene group from next member.

Step-by-step solution

A homologous series is a series of organic compounds with the same functional group, similar chemical properties, and the same general formula. Successive members of a homologous series differ from each other by a methylene group ( -CH₂- ) and a molecular mass of 14 u . The statement that each member differs by an ethylene group is incorrect, as they differ by a methylene group. Answer: Each member differs by ethylene group from next member.

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