31. A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for __________ flow of filtrate.
32. Balls for ball mills are never made of
33. Which of the following may prove unsuitable for filtering volatile liquids?
34. Cement clinker is reduced to fine size by a
35. The speed of a rotary drum vacuum filter may be about __________ rpm.
36. The crushed material received for separation is called feed or
37. The capacity of a gyratory crusher is __________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range.
38. For classification of potable (drinking) water, we use a __________ filter.
39. Which of the following is not an ultrafine grinder (colloid mill)?
40. A belt conveyor used for the transportation of materials can
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