Under which condition is it impossible for any substance to remain in a liquid state?

Thermodynamics MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Thermodynamicsmechanical-engineering-mcqs › thermodynamics
Published
26 Jan 2019
Last updated
28 May 2026

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Explanation

Liquids require a certain amount of pressure to exist. At zero pressure, substances cannot maintain a liquid phase because the molecules are not held together sufficiently, causing the liquid to vaporize or freeze depending on temperature. Therefore, no liquid can exist at zero pressure.

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