51. Traces of liquid tar fog present in coke oven gas is separated using
52. Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm.
53. The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to
54. Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about
55. Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the __________ filtration.
56. In paint industries, blending of light paste is done by using a
57. Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre, V = speed of the conveyor, metre/second, ρ = bulk density of material, kg/m3)
58. Close circuit grinding by a ball mill with air sweeping employs a
59. Which of the following is a pressure filter?
60. __________ mill is normally used for grinding of talc.
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