Natural water contains approximately ______________ percent of heavy water?

Related Mcqs:

1. Cast iron contains ____________________ percent carbon?

   A. 2.5
   B. 3.75
   C. 4.75
   D. 5.25

2. The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be________________?

   A. 3171Pa
   B. 3567Pa
   C. 1.01 × 105Pa
   D. 5000Pa

3. Thermal efficiency of an internal combustion engine is around ______________ percent?

   A. 8
   B. 35
   C. 65
   D. 80

4. Maximum permissible sulphur content in steel is ______________ percent ?

   A. 0.015
   B. 0.055
   C. 0.505
   D. 0.805

5. An approximately _____________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section ?

   A. Adiabatic
   B. Isothermal
   C. Isentropic
   D. Isochoric

6. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?

   A. Aqueous tension
   B. Saturated humidity
   C. Vapor pressure
   D. Absolute humidity

7. Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?

   A. Conduction
   B. Convection
   C. Radiation
   D. Both A. & B.

8. Potable water means the water used for____________________?

   A. Fire-fighting
   B. Cooling
   C. Drinking
   D. Evaporation to produce steam

9. The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?

   A. Evaporative capacity
   B. Evaporation efficiency
   C. Thermal efficiency
   D. Steam load

10. The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?

    A. Ambient
    B. Dry bulb
    C. Dew point
    D. Wet bulb