Hydrometer is used to determine________________?

Related Mcqs:

1. The property of a fluid which enables it to resist tensile stress is known as________________?

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

2. 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

3. 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

4. Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called________________?

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

5. The units of kinematic viscosity are_______________?

   A. metres2 per sec
   B. kg sec/meter
   C. newton-sec per meter
   D. newton-sec per meter
   E. none of the above

6. The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be___________________?

   A. 500 kg
   B. 1000 kg
   C. 1500 kg
   D. 2000 kg
   E. 4000 kg

7. The vapour pressure over the concave surface is________________?

   A. less man the vapour pressure over the plane surface
   B. equal to the vapour pressure over the plane surface
   C. greater than the vapour pressure over the plane surface
   D. zero
   E. none of the above

8. Center of buoyancy is the___________________?

   A. centroid of the displaced volume of fluid
   B. center of pressure of displaced volume
   C. e.g. of floating ‘body
   D. does not exist
   E. none of the above

9. Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be ___________________?

   A. 1000 kg
   B. 4000 kg
   C. 2000 kg
   D. 8000 kg
   E. 16000 kg

10. A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc__________________?

    A. 10 kg
    B. 100 kg
    C. 1000 kg
    D. 1 kg
    E. 10,000 kg