+1 vote
in Food Processing Unit Operations by (110k points)
The viscosity of gases ____________as temperature increases.

(a) increases

(b) decreases

(c) remains same

(d) fluctuation

This question was addressed to me in an interview for job.

Origin of the question is Fluid Flow Theory topic in chapter Fluid Flow Theory & Applications of Food Processing Unit Operations

1 Answer

+2 votes
by (736k points)
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Best answer
Correct choice is (a) increases

For explanation: As the temperature rises, the viscosity of gases also increases. This is due to increase in the frequency of the intermolecular collisions. The relationship between viscosity and temperature is velocity is directly proportional to the square root of the temperature.

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