Viscosity MCQ Quiz - Multiple Choice Questions & Answers Page 2

11. The viscosity of an oil decrease when temperature

1. Decreases
2. Is constant
3. Increases
4. 100<>sup>oC

12. The viscosity of petroleum oil for hydraulic lifts is

1. High
2. Low
3. Moderate
4. Very high

13. Viscous force between the two layers having unit area and unit velocity gradient.

1. Coefficient of viscosity
2. Surface tension
3. Elasticity
4. None of the above

14. What do you call the resistance of a liquid to flow?

1. volume
2. mass
3. viscosity
4. fluidity

15. What happens to the viscosity of liquid with the increase in temperature?

1. It increases
2. It decreases
3. It may increase or decrease
4. No change

16. What is the S.I. unit of viscosity?

1. Candela
2. Poise
3. Newton
4. No unit

17. Which of the following liquids is viscous?

1. honey
2. water
3. Petrol
4. cooking oil

18. Which of the following represents viscosity?

1. Potential energy stored in fluid
2. Resistance to fluid motion
3. Roughness of the surface
4. The pressure difference between the two fluids

19. Which of these are fluids?

1. Oxygen
2. Water
3. Rocks
4. Both A & B

20. Which of these factors affects Viscosity?

1. Temperature
2. Colour
3. Taste
4. None of these