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What is the process of gas changing into liquid called?

Answer and explanation

Correct answer: Condensation

The governing concept is the change of physical state caused by changes in temperature or pressure. When a gas loses thermal energy or is compressed suitably, its particles move closer and form a liquid; this gas-to-liquid transition is called condensation. For example, water vapour forms liquid water on a cool surface. Hence option A is correct. Melting in option B is the change from solid to liquid, not gas to liquid. Sublimation in option C is the direct change between solid and gas, commonly solid to gas on heating. Decomposition in option D is a chemical change in which a compound breaks into simpler substances, not a physical state change. Condensation changes arrangement and energy, while the substance remains chemically the same.

Related tags

ChemistryNature-Of-MatterState-ChangesNature Of MatterSome Basic Concepts Of ChemistryClass 11 Mcq

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