Mechanical Operations Mcqs for Chemical

Q.  The equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 cm will be _______________ cms?

a. 20
b. 12
c. 8
d. 2


ANSWER: See Answer
 
No explanation is available for this question!
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MCQs:  Size reduction of the ______________ can be suitably done by ball mills, crushing rolls and rod mills?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  For spheres, the specific surface shape factor is given by___________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  A _____________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Cake resistance is___________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Colloid mills achieve size reduction mainly by___________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m3 of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m3 of filtrate to be produced? Neglect filter medium resistance, Rm; assume incompressible cake ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ___________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Equivalent diameter of a particle is the diameter of the sphere having the same __________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Which of the following is not accomplished by agitation of liquids in agitators ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  _____________ is the most commonly used ‘filter aid’?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  For grinding of cereals, grains, spices, pigments, saw dust, cork etc., the most extensively used size reduction equipment is a__________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  For the preliminary breaking of hard rock, we use a____________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Jigging is a technique by which different particles can be____________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  _______________ mill is not used for grinding wheat into flour and for milling of cereals & other ? vegetable products.
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond’s law) of the energy to grind the particles from a very large size to 50 μm is________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  According to Taggart’s rule for selecting between a gyratory crusher and a jaw crusher; the later should be used, if the hourly tonnage to be crushed divided by the square of the gape expressed in cm is less than_______________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Wet sieving is employed, when the product contains ________________ materials?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Size reduction mechanism used in Jaw crushers is__________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Solid particles separation based on the difference in their flow velocities through fluids is termed as the__________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts