Removal of non-condensable from steam or other vapour is termed as the ________________ process?

Related Mcqs:

1. The process of removal of scale formed during hot rolling of steel is termed as_________________?

   A. Descaling
   B. Shot blasting
   C. Pickling
   D. Skimming

2. Dry saturated steam can be converted into super heated steam by____________________?

   A. Increasing its cross-sectional area of flow
   B. Passing it through a pressure reducing valve
   C. Forcing it downwards through a vertical tube
   D. None of these

3. Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be_________________?

   A. Wet
   B. Saturated
   C. Superheated
   D. None of these

4. Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?

   A. Decreases
   B. Increases
   C. Remain same
   D. May increase or decrease

5. . The effect of friction on the flow of steam through a nozzle is to decrease the _______________ of steam?

   A. Wetness
   B. Mass flow rate
   C. Both A & B
   D. Neither A nor B

6. In “Imperial Smelting Process” for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following _______________________?

   A. Jet of water at high pressure
   B. Blast of air
   C. Mixture of water and air
   D. Rain of molten lead

7. A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material ?

   A. Steel
   B. Glass
   C. Rubber
   D. Brass

8. One ton of refrigeration is not equivalent to the heat removal rate of ____________________?

   A. 200 BTU/minute
   B. 50 kcal/minute
   C. 50 kJ/sec
   D. 3.5 KW

9. The mechanism involved in the removal of metal in drilling operation is by_________________?

   A. Compression
   B. Extrusion
   C. Shearing
   D. Both B & C

10. In the blast furnace, incorporation of water vapour in the blast gives the following effect ?

    A. Increases the reducing potential of the gas
    B. Increases the flame temperature
    C. No significant change occurs
    D. Increases the hydrogen content in the metal