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  9. Q395

RRB Group D (Level-1 posts) 2022 · Question 395 of 598

All the compounds of which of the following sets belong to the same homologous series?

  1. AC₃H₈, C₄H₁₀, C₅H₁₂Correct
  2. BC₆H₁₀, C₆H₁₂, C₆H₁₄
  3. CC₄H₈, C₅H₈, C₆H₁₀
  4. DC₂H₆, C₂H₄, C₂H₂

Answer: A. C₃H₈, C₄H₁₀, C₅H₁₂

Explanation

C₃H₈, C₄H₁₀, and C₅H₁₂ are alkanes, fitting the formula CnH2n+2, and thus belong to the same homologous series.

Source: RRB Group D 2022 Prev. Yr. Paper (18 Aug 2022) (Shift 2) - Prepp · reliable-secondary

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