Basic slag is not ground in_________________? A. Jaw crushers B. Ball mills C. Compartment mills D. Tube mills

For benefication of iron ore, the most commonly used method is______________? A. Flocculation B. Froth floatationC. Jigging & tabling D. None of these

Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is ________________ ? A. 0.5B. 1 C. √2 D. √3

Gelatinous solid (which plug the septum) can be filtered by a _____________ filter? A. Sparkler B. Plate and frame C. Vacuum leafD. Pre-coat

__________ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc? A. Flight B. Screw C. Drag D. Belt

Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their_________________? A. Particle sizes B. DensitiesC. Terminal velocities D. None of these

_____________ conveyors are also called scrapers? A. Apron B. Screw C. Helical flightD. Both B. & C.

Fibrous material is broken by a__________________? A. Roll-crusherB. Squirrel-cage disintegrator C. Ball mill D. Tube mill

Work index is defined as the_________________? A. Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen B. Energy needed to crush one tonne…

Grindability of a material does not depend upon its_____________________? A. Elasticity B. Hardness C. ToughnessD. Size