Petroleum products (LPG composition): What are the main constituent gases of Liquefied Petroleum Gas used for cooking and heating? LPG is a mixture of low–molecular-weight hydrocarbons stored as a liquid under moderate pressure. Choose the correct principal composition.
General Knowledge
General Science
Difficulty: Easy
Choose an option
Answer
Correct Answer: Propane (C3H8) and butane (C4H10)
Explanation
Given data
- LPG = Liquefied Petroleum Gas used domestically and industrially.
- Stored under pressure; vaporized for burning.
Concept/ApproachLPG is formulated primarily from propane and butane (including isobutane). Methane is the main component of CNG/LNG, not LPG.
Reasoning• Propane and butane liquefy at modest pressures and ambient temperatures → ideal for cylinders.• Heavier components like hexane/nonane are not used due to poor volatility.
Common pitfallsMistaking LPG (propane–butane) for CNG/LNG (methane).
Final AnswerPropane (C3H8) and butane (C4H10)