31. Vertical transportation of materials can be done by a/an
32. Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?
33. Fluid energy mill comes in the category of
34. __________ mill is not a revolving mill.
35. Which of the following is not a revolving/tumbling mill used for size reduction?
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