A. Thickeners
B. Classifiers
C. Hydrocyclones
D. Decanters
A. 0.5
B. 1.0
C. 2.76
D. 0.66
A. Diatomaceous earth
B. Calcium silicate
C. Sodium carbonate
D. Silica gel
A. Run at very high rpm
B. Suitable for sticky materials
C. Suitable for highly abrasive materials
D. All A., B. and C.
A. Produces finer products
B. Is long in comparison with its diameter
C. Uses smaller balls
D. All A., B. & C.
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. Filter cloth
B. Embedded particles in the septum
C. Filter cloth and the embedded particle collectively
D. None of these