Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB
PhysicsMediumassertion reason
Assertion: The pressure of LPG in a cooking cylinder stays the same while it is used, until the cylinder is nearly empty.
Reason: The cylinder holds liquid and vapour in equilibrium, and the saturated vapour pressure depends only on temperature.
Options:
Answer:
A
Solution:
As gas is drawn out, liquid evaporates to replace it. The saturated vapour pressure stays at its value for that temperature, so the pressure is constant until the liquid is used up. The reason explains the assertion. A.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws
⏱ 2mℹ️ Source: QB
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