The increase of temperature results in
A. increase in viscosity of gas
B. increase in viscosity of liquid
C. decrease in viscosity of gas
D. decrease in viscosity of liquid
Answer: Option D
Solution (By Examveda Team)
Viscosity is a measure of a fluid's resistance to flow. It is affected by temperature differently for liquids and gases.Effect of Temperature on Liquids:
- As temperature increases, the kinetic energy of liquid molecules increases.
This weakens intermolecular forces, making it easier for the liquid to flow.
As a result, the viscosity of a liquid decreases with an increase in temperature.
Effect of Temperature on Gases:
- In gases, viscosity is primarily due to the momentum transfer between molecules.
As temperature increases, the molecular collisions increase, leading to higher viscosity.
Analysis of Options:
- Option A: Increase in viscosity of gas → Correct for gases, but the question focuses on general fluid behavior.
Option B: Increase in viscosity of liquid → Incorrect, as liquid viscosity decreases with temperature.
Option C: Decrease in viscosity of gas → Incorrect, as gas viscosity increases with temperature.
Option D: Decrease in viscosity of liquid → Correct, as liquid viscosity reduces when temperature rises.
Conclusion: The correct answer is Option D: decrease in viscosity of liquid because higher temperatures reduce intermolecular forces in liquids, allowing them to flow more easily.
This Question Belongs to Civil Engineering >> Hydraulics And Fluid Mechanics
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Comments (7)
A. 22.5 m/sec.
B. 33 m/sec.
C. 40 m/sec.
D. 90 m/sec.
A. the weight of the body
B. more than the weight of the body
C. less than the weight of the body
D. weight of the fluid displaced by the body
The difference of pressure between the inside and outside of a liquid drop is
A. $${\text{p}} = {\text{T}} \times {\text{r}}$$
B. $${\text{p}} = \frac{{\text{T}}}{{\text{r}}}$$
C. $${\text{p}} = \frac{{\text{T}}}{{2{\text{r}}}}$$
D. $${\text{p}} = \frac{{2{\text{T}}}}{{\text{r}}}$$
A. cannot be subjected to shear forces
B. always expands until it fills any container
C. has the same shear stress.at a point regardless of its motion
D. cannot remain at rest under action of any shear force
Answer A&D
The answer is both A and D
Increase in temperature results in Increase in viscosity of Gas And decrease in viscosity of liquid
A and D both right
A & D are both right
A&d are right
Its answer must be.. a and d both
Bcz.. As we increase the temperature randomness wil increase thats why viscosity of gases increased while bcz of decrease in cohesion force bw liquid partical viscosity of liquid will decrease
It should be both a and b option