A. Attrition
B. Compression
C. Impact
D. Cutting
A. Length to diameter ratio
B. Size of the grinding media
C. Final product size
D. Operating speed
A. Swirling
B. Vortexing
C. Both A. & B.
D. Neither A. nor B.
A. Work required to form a particle of any size is proportional to the square of the surface to
volume ratio of the product
B. Work required to form a particle of a particular size is proportional to the square root of the
surface to volume ratio of the product
C. Work required in crushing is proportional to the new surface created
D. For a given machine and feed, crushing efficiency is dependent on the size of the feed &
product
A. Iron ores
B. Sulphide ores
C. Quartzite
D. None of these
A. Solids
B. Solids from fluids
C. Liquids
D. Solids from solids
A. Filtering
B. Washing
C. Drying
D. All A., B. & C.