The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the__________________?

Related Mcqs:

1. In the cyclone separator used for separation of dust from dust laden gas, the gas ?

   A. Enters the cyclone from the top
   B. Is admitted tangentially at high velocity
   C. Develops a helical motion inside the chamber
   D. Both B. and C.

2. Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?

   A. 200°C and 5 atm
   B. 1000°C and 10 atm
   C. 500°C and 50 atm
   D. 1000°C and 500 atm

3. Metallic wire mesh is used as a filtering medium for the separation of dust from dust laden gas in case of a/an________________?

   A. Air filter
   B. Bag filter
   C. Venturi scrubber
   D. Hydrocyclones

4. Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles) ?

   A. m/ρ . Vp
   B. m . ρ/Vp
   C. m . Vp/ρ
   D. Vp/m . ρ

5. The most suitable equipment for removing the fine dust particle (< 1 micron dia.) from air below its dew point will be a/an______________?

   A. Bag filter
   B. Electrostatic precipitator
   C. Cyclone separator
   D. Wet scrubber

6. For grinding of cereals, grains, spices, pigments, saw dust, cork etc., the most extensively used size reduction equipment is a__________________?

   A. Buhrstone mill
   B. Ball mill
   C. Crushing rolls
   D. Hammer mill

7. Solid particles separation based on the difference in their flow velocities through fluids is termed as the__________________?

   A. Clarification
   B. Classification
   C. Elutriation
   D. Sedimentation

8. Raw materials are charged in the iron blast furnace using____________________?

   A. Bucket elevator
   B. Skip hoist
   C. Screw conveyor
   D. None of these

9. The most suitable equipment for the transportation of 200 mesh size particles is a _______________?

   A. Bucket elevator
   B. Pneumatic conveyor
   C. Screw conveyor
   D. Belt conveyor

10. For the transportation of ultrafine particles, the equipment used is a ____________ conveyor?

    A. Belt
    B. Pneumatic
    C. Screw
    D. None of these