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 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

4. 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

5. The specific gravity of diesel oil Is_________________?

   A. 1
   B. 0.7
   C. 0.85
   D. 0.5
   E. 1.25

6. 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

7. The specific fuel consumption for a petrol engine first decreases with increase in fuel air ratio and then increases with further increase in fuel air ratio. The minimum value occurs in the range of__________________?

   A. lean mixture
   B. chemically correct mixture
   C. rich mixture
   D. unpredictable
   E. none of the above

8. 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

9. A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is____________________?

   A. 9,000 kg
   B. 13,500 kg
   C. 18,000 kg
   D. 27,000 kg
   E. 30,000 kg

10. Maximum work is done in compressing air when the compression is_________________?

    A. isothermal
    B. adiabatic
    C. polytropic
    D. any one of the above
    E. none of the above