A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is__________________?

Related Mcqs:

1. 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

2. An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of_________________?

   A. 1
   B. 1.2
   C. 0.8
   D. 0.75
   E. 1.25

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. A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is__________________?

   A. 0.83
   B. 0.6
   C. 0.4
   D. 0.3
   E. none of the above

5. A metal with specific gravity of o floating in a fluid of same specific gravity a will___________________?

   A. sink to bottom
   B. float over fluid
   C. partly immersed
   D. be fully immersed with top surface at fluid surface
   E. none of the above

6. A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is_____________________?

   A. 0.30 m/sec
   B. 0.35 m/sec
   C. 0.40 m/sec
   D. 0.45 m/sec

7. A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will__________________?

   A. increase
   B. decrease
   C. remain same
   D. increase/decrease depending on depth of immersion
   E. unpredictable

8. The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is______________________?

   A. 213.5 cm/sec
   B. 313.5 cm/sec
   C. 413.5 cm/sec
   D. 500 cm/sec

9. In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is_________________?

   A. 2.25
   B. 2.50
   C. 2.55
   D. 2.65

10. Specific weight of sea water is more that of pure water because it contains ________________?

    A. dissolved air
    B. dissolved salt
    C. suspended matter
    D. all of the above
    E. heavy water