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

Related Mcqs:

1. 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

2. A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury ?

   A. the metal piece will simply float over the mercury
   B. the metal piece will be immersed in mercury by half
   C. whole of the metal piece will be immersed with its top surface just at mercury level
   D. metal piece will sink to the bottom
   E. none of the above

3. If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water___________________?

   A. 51 cm
   B. 50 cm
   C. 52 cm
   D. 52.2 cm
   E. 51.7 cm

4. A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

   A. 0.5
   B. 0.4
   C. 0.515
   D. 0.5
   E. none of the above

5. A liquid would wet the solid, if adhesion forces as compared to cohesion forces are_________________?

   A. less
   B. more
   C. equal
   D. less at low temperature and more at high temperature
   E. there is no such criterion

6. The volumetric change of the fluid caused by a resistance is known as_________________?

   A. volumetric strain
   B. volumetric index
   C. compressibility
   D. adhesion
   E. cohesion

7. The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as_________________?

   A. one dimensional flow
   B. uniform flow
   C. steady flow
   D. turbulent flow
   E. streamline flow

8. The region between the separation streamline and the boundary surface of the solid body is known as_________________?

   A. wake
   B. drag
   C. lift
   D. boundary layer
   E. aerofoil section

9. A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is _________________?

   A. 400 kg/cm2
   B. 4000 kg/cm2
   C. 40 x 105 kg/cm2
   D. 40 x 106 kg/cm2
   E. none of the above

10. For a body floating in a liquid the normal pressure exerted by the liquid acts at _________________?

    A. bottom surface of the body
    B. e.g. of the body
    C. metacentre
    D. all points on the surface of the body
    E. all of the above