Physics · Fluid Mechanics
Consider two sealed containers, one filled with a liquid and the other with a gas, both initially at room temperature. The temperature of both containers is gradually increased. Which of the following best describes the expected trend in viscosity and the correct physical reasoning behind it?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Viscosity of both liquid and gas increases due to increased kinetic energy and density with temperature.
- 2Viscosity of liquid decreases due to reduced intermolecular cohesion, while viscosity of gas increases due to increased momentum exchange between molecules.✓
- 3Viscosity of liquid increases while that of gas decreases due to enhanced cohesive forces and reduced molecular collisions.
- 4Viscosity of both liquid and gas decreases due to increased molecular spacing at higher temperatures.
Correct answer
Viscosity of liquid decreases due to reduced intermolecular cohesion, while viscosity of gas increases due to increased momentum exchange between molecules.
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