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WBCS Preliminary Examination 2022 — General Studies · Question 130 of 200

Q130
General ScienceChemistry
Which of the following is chiefly present in LPG?
  1. a.Methane
  2. b.Ethane
  3. c.Propane
  4. d.Butane

Answer: (D) Butane

LPG (Liquefied Petroleum Gas) used for domestic cooking primarily consists of butane ($C_4H_{10}$) and propane ($C_3H_8$), but butane is the chief component in the Indian LPG standard. Methane is the main constituent of natural gas (CNG), not LPG.

Q129 Whole paperQ131