Chemical Engineering MCQs

6108 MCQs  (Page 394 of 611)

Attempt Chemical Engineering Quiz
Non-colloidal solution is an example of the _______________ fluid?
A. Non-newtonian
B. Newtonian
C. Dilatent
D. Pseudo-plastic
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A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 × 103 VOM + 10.94 × 106 V2 OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is_________________?
A. 12 mm/s
B. 16 mm/s
C. 24 mm/s
D. 28 mm/s
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For very low pressure and high discharge rate, the compressor used is a/an ______________ compressor?
A. Axial
B. Reciprocating
C. Rotary
D. None of these
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The pressure head on sudden contraction in a horizontal pipe is converted into the _____________ head?
A. Elevation
B. Velocity
C. Both a. & b.
D. Neither a. nor b.
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Rise of liquid in a capillary tube is due to_________________?
A. Cohesion
B. Adhesion
C. Both a. & b.
D. Neither a. nor b.
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The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the___________________?
A. Static submergence
B. Net positive suction head (npsh)
C. Cavitation sensitivity
D. Priming
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Co-efficient of discharge (Cd) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about__________________?
A. 0.42
B. 0.62
C. 0.82
D. 0.98
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The head loss in turbulent flow in a pipe varies________________?
A. As velocity
B. As (velocity)2
C. Inversely as the square of diameter
D. Inversely as the velocity
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The fluid property, due to which, mercury does not wet the glass is__________________?
A. Surface tension
B. Viscosity
C. Cohesion
D. Adhesion
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The ratio of inertial forces to elastic forces is called the __________ number?
A. Reynolds
B. Mach
C. Euler
D. Weber
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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