Mechanical Operation Principle Chemical Engineering MCQ - Set 10 - ObjectiveBooks

Mechanical Operation Principle Chemical Engineering MCQ - Set 10

Practice Test: Question Set - 10

1. Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.
    (A) Plane
    (B) Curved
    (C) Ribbed
    (D) Either (a) or (b)

2. All resistances during washing of cake
    (A) Increases
    (B) Decreases
    (C) Remain constant
    (D) None of these

3. Which is the most suitable conveyor for transportation of sticky material?
    (A) Apron conveyor
    (B) Belt conveyor
    (C) Screw conveyor
    (D) Pneumatic conveyor

4. 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

5. In classification, particles are said to be equal settling, if they have the same terminal velocities in the
    (A) Different fluids
    (B) Same fluid
    (C) Same field of force
    (D) Both (b) and (c)

6. Dry powdery solid materials are transported by a __________ conveyor.
    (A) Belt
    (B) Bucket
    (C) Screw
    (D) None of these

7. The work index in Bond's law for crushing of solids has the following dimensions
    (A) No units (dimensionless)
    (B) kWh/ton
    (C) kW/ton
    (D) kWh.m1/2/ton

8. Which of the following is used for primary crushing of very hard lumpy materials?
    (A) Toothed roll crusher
    (B) Gyratory crusher
    (C) Ball mill
    (D) Tube mill

9. Which of the following minerals is not subjected to magnetic separation method?
    (A) Rutile
    (B) Galena
    (C) Chromite
    (D) Siderite

10. Fluid energy mill comes in the category of
    (A) Grinder
    (B) Crusher
    (C) Cutter
    (D) Ultrafine grinder

11. Stamp mills are generally used for crushing
    (A) Iron ores
    (B) Gold ores
    (C) Talc
    (D) Diamond

12. Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a
    (A) Pug mill
    (B) Mixer-extruder
    (C) Banbury mixer
    (D) Muller mixer

13. Basic slag is not ground in
    (A) Jaw crushers
    (B) Ball mills
    (C) Compartment mills
    (D) Tube mills

14. Wheat is ground into flour in a
    (A) Hammer crusher
    (B) Roller crusher
    (C) Impact mill
    (D) Fluid energy mill

15. For benefication of iron ore, the most commonly used method is
    (A) Flocculation
    (B) Froth floatation
    (C) Jigging & tabling
    (D) None of these

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