Chemical Engineering MCQs

6108 MCQs  (Page 231 of 611)

Attempt Chemical Engineering Quiz
To get a fine talc powder from its granules, the equipment used is____________________?
A. Roller crusher
B. Ball mill
C. Jaw crusher
D. Gyratory crusher
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The controlling resistance in a rotary drum vacuum filter is the ________________ resistance?
A. Piping
B. Cake
C. Filter medium
D. None of these
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Separation of particles of various sizes, shapes and densities by allowing them to settle in a fluid is called__________________?
A. Classification
B. Froth floatation
C. Thickening
D. Clarification
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Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripheral velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m3 here, V =πND where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) ?
A. 3.6 v.w.dr.ρ
B. 3.6 v.w. ρ
C. 3.6 w.dr.ρ
D. 3.6 v.w.dr/ρ
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In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of _______________ crushing?
A. Primary
B. Secondary
C. Fine
D. Ultrafine
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A fluid energy mill is used for __________________?
A. Cutting
B. Grinding
C. Ultra-grinding
D. Crushing
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Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the ___________________?
A. Light metal powder down upto 4 mesh size
B. Dry chemicals
C. Heavy tonnages of rocks or gravel
D. Powdered food & granular materials
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Gravity stamp mill is meant for the ___________________ crushing?
A. Primary
B. Intermediate
C. Fine
D. Ultrafine
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For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) ?
A. Π = (a/d2)
B. Π/6 = (v/d3)
C. Ad/v
D. None of these
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_______________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution?
A. Tumbler
B. Banbury
C. Muller
D. Ribbon blender
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Word of the Day
27 Jul
Widen
make or become wider.
چوڑا ہونا، کشادہ کرنے کا عمل

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