Mixing of light fine powder such as insecticides is done by____________________?

Related Mcqs:

1. To get a fine talc powder from its granules, the equipment used is____________________?

   A. Roller crusher
   B. Ball mill
   C. Jaw crusher
   D. Gyratory crusher

2. Size reduction of asbestos and mica is done by____________________?

   A. Hammer mills
   B. Rod mills
   C. Gyratory crushers
   D. Crushing rolls

3. Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a _____________ operation?

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

4. To produce talcum powder, use_____________________?

   A. Ball mill
   B. Hammer mill
   C. Jet mill
   D. Pin mill

5. Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise) ?

   A. Propeller
   B. Helical screw
   C. Flat blade turbine
   D. Curved blade turbine

6. Mixing mechanism employed in a pan mixer is by ________________?

   A. Mulling
   B. Kneading
   C. Dispersion
   D. None of these

7. The important dimensional group involved in the power requirement calculation in mixing operation is the _____________ number?

   A. Reynold’s
   B. Froude
   C. Both A. & B.
   D. Neither A. nor B.

8. Which of the following clay mixing devices is vacuum operated for deairation of clay ?

   A. Banbury mixer
   B. Pug mill
   C. Muller-mixer
   D. None of these

9. Mixing of plastic solids is generally facilitated by___________________?

   A. Dispersion
   B. Mastication
   C. Kneading
   D. None of these

10. In a mixer, the quantity, (v. L/D) is termed as __________ number (where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing) ?

    A. Weber
    B. Peclet
    C. Brinkman
    D. Schmidt