The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately_______________?

Related Mcqs:

1. The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately____________________?

   A. 1 mm
   B. 5 mm
   C. 10 mm
   D. 20 mm
   E. 30 mm

2. If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be_________________?

   A. higher than the surface of liquid
   B. the same as the surface of liquid
   C. lower than the surface of liquid
   D. unpredictable
   E. none of the above

3. The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will_______________?

   A. increase
   B. remain unaffected
   C. may increase or decrease depending on the characteristics of liquid
   D. decrease
   E. unpredictable

4. In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to_________________?

   A. sin 9
   B. sin 9
   C. casS
   D. cos 9
   E. tan 9

5. Capillary action is due to the__________________?

   A. surface tension
   B. cohesion of the liquid
   C. adhesion of the liquid molecules and the molecules on the surface of a solid
   D. all of the above
   E. none of the above

6. Mercury does not wet glass. This is due to property of liquid known as_________________?

   A. adhesion
   B. cohesion
   C. surface tension
   D. viscosity
   E. compressibility

7. The atmospheric pressure with rise in altitude decreases____________________?

   A. linearly
   B. first slowly and then steeply
   C. first steeply and then gradually
   D. unpredictable
   E. none of the above

8. Dynamic viscosity of most of the liquids with rise in temperature____________________?

   A. increases
   B. decreases
   A. remains unaffected
   D. unpredictable
   E. none of the above

9. Dynamic viscosity of most of the gases with rise in temperature___________________?

   A. increases
   B. decreases
   C. remains unaffected
   D. unpredictable
   E. none of the above

10. Pitot tube is used for measurement of__________________?

    A. pressure
    B. flow
    C. velocity
    D. dsscharge
    E. viscosity