Chemical Engineering - Fluid Mechanics - Discussion

Discussion Forum : Fluid Mechanics - Section 2 (Q.No. 27)
27.
With increase in the temperature, viscosity of a liquid
increases
decreases
remains constant
may increase or decrease; depends on the liquid
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Arindam Roy said:   6 years ago
Agree, Option B is correct.

Ref: R.K.Bansal.

Kiran said:   6 years ago
I think option D is correct because with increasing temperature viscosity for gases increases with increasing temperature and viscosity for liquids decrease with increasing temperature.

Praveen Kumar said:   7 years ago
Because in liquid shear, stress is mainly due to the cohesive force which predominates the molecular momentum transfer hence increase in temp leads to a decrease in the cohesive force of attractions in liquids so viscosity decreases.

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