Thermal conductivity of a gas at low density, ___________ with increase in temperature ?
Correct answer: B. Increases
- A. Decreases
- B. Increases
- C. Remains unchanged
- D. May increase or decrease; depends on the gas
Explanation
At low gas density, gas molecules travel relatively freely between collisions, and their thermal conductivity generally increases as temperature rises. This is the usual kinetic-theory behaviour for gases.
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