Traces of liquid tar fog present in coke oven gas is separated using____________________?

Related Mcqs:

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

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

2. Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a____________________?

   A. Disc bowl centrifuge
   B. Sharpies super-centrifuge
   C. Batch basket centrifuge
   D. Sparkler filter

3. Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) ?

   A. 0.5 D
   B. D
   C. 1.5 D
   D. 2 D

4. Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the___________________?

   A. Coagulation
   B. Flocculation
   C. Sedimentation
   D. Clarification

5. A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ___________________?

   A. ½w2 . R2 . ρL
   B. ½w2 . δ2 . ρL
   C. ½w2 . δρL (2R + δ)
   D. ½w2 . R . ρL(R + 2δ)

6. Solid particles of different densities are separated by _____________________?

   A. Filters
   B. Thickness
   C. Cyclones
   D. Sorting classifier

7. Dispersion of a gas through liquid is done by using a__________________?

   A. Sparger
   B. Kneader
   C. Masticator
   D. None of these

8. 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.

9. About 2-3 hp, power per gallon of a thin liquid provides vigorous agitation in an agitator. ‘Power number’ in agitation is given by __________________?

   A. P. gc/n3. D2. ρ
   B. P. gc. ρ/μ2
   C. n3. D3. ρ/P. gc
   D. P. gc/n2. D2. ρ

10. Power consumption during turbulent flow in agitation tank is proportional to the ______________ of the liquid?

    A. Viscosity
    B. Thermal conductivity
    C. Surface tension
    D. Density