Chemical Engineering MCQs

6108 MCQs  (Page 249 of 611)

Attempt Chemical Engineering Quiz
The study on washability of coal is done by using the _____________ technique?
A. Tabling
B. Elutriation
C. Heavy media separation
D. None of these
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In the cyclone separator used for separation of dust from dust laden gas, the gas ?
A. Enters the cyclone from the top
B. Is admitted tangentially at high velocity
C. Develops a helical motion inside the chamber
D. Both b. and c.
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Which of the following represents the plot of filtrate volume versus time for constant pressure filtration ?
A. Parabola
B. Straight line
C. Hyperbola
D. Exponential curve
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Colloidal mills are used for ______________ grinding?
A. Coarse
B. Intermediate
C. Fine
D. Ultrafine
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The unit of specific cake resistance is______________________?
A. Gm/cm2
B. Cm/gm
C. Cm/gm2
D. Gm/gm
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Weber number is significant and is concerned with the_________________?
A. Solid-liquid mixing
B. Liquid-liquid mixing
C. Dispersion of liquid in liquid
D. Suspension of solid in liquid
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Horsepower required for a roll crusher is directly proportional to its__________________?
A. Reduction ratio
B. Capacity
C. Both a. & b.
D. Neither a. nor b.
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______________ mean diameter of particles is given by Σ (xi/Dpi ⃗)?
A. Mass
B. Volume
C. Arithmetic
D. Volume surface
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The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond’s law, Rittinger’s law and Kick’s law) depend upon the_________________?
A. Feed material
B. Type of crushing machine
C. Both a. & b.
D. Neither a. nor b.
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What is the selectivity index, if the grade of tailings & concentrate is the same ?
A. 0
B. ∞
C. 1
D. 0.5
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Word of the Day
28 Jul
Fragile
(of an object) easily broken or damaged.
نازک، کاغذی، آسانی سے ٹوٹ جانیوالا

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