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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