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SSC Stenographer 2022 PYQ — Question 129

SSC Stenographer - 17 Nov 2022 - Shift 2 • General Awareness • Q129

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Identify a hydrocarbon pair that is NOT the part of the homologous series. 

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Correct answer: B

Explanation

The correct answer is C2H6 and C3H9 i.e.

  • Homologous series: A series of compounds that can be represented by a common formula.
  • Hydrocarbons are organic compounds made up of hydrogen and carbon atoms. Their main source is petroleum. Natural gas also contains only hydrocarbons. Hydrocarbons are of two types, saturated and unsaturated.
  • C2H6 (ethane) and C3H9 (propane) belong to the same homologous series, the series of alkanes. Alkanes are saturated hydrocarbons with single bonds between carbon atoms.