Viscosity of gases ______________ with increase in temperature?
Correct answer: B. Increase slowly
- A. Increase very rapidly
- B. Increase slowly
- C. Decrease slowly
- D. Remain unaffected
Explanation
Unlike liquids, gases become more viscous as temperature rises because faster molecular motion increases momentum transfer between layers. The increase is generally gradual, so 'increase slowly' is the appropriate choice.
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