Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumstatement
An exposed sample of water is in a near-vacuum environment below the triple-point pressure. Which statement is correct about the possible forms of water?
Statement I: Stable liquid is possible at every temperature.
Statement II: Ice can persist in sufficiently cold traps and can sublime into transient vapour; stable exposed liquid is not possible.
Options:
Answer:
C
Solution:
Below the triple-point pressure, the liquid phase is not thermodynamically stable. Cold ice can persist, especially in protected cold traps, while surface molecules can sublime into vapour. The timescale depends on temperature and energy supply. Statement I is false and Statement II true. Correct option: (C).
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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