Chemical Engineering MCQs

6108 MCQs  (Page 70 of 611)

Attempt Chemical Engineering Quiz
The life of a ball bearing is inversely proportional to________________?
A. (load)1
B. (load)2
C. (load)3
D. (load)0.33
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Corrosion rate cannot be lowered by reducing the ________________ of the corroding medium?
A. Concentration
B. Velocity
C. Temperature
D. None of these
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The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe) ?
A. A
B. D
C. 1/a
D. 1/a2
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In case of compression of one kg of air, the work done will be the least, when the value of polytropic index ‘n’ is______________________?
A. 1
B. 1.4
C. 1.5
D. Y = cp/cv
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Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is_______________?
A. R ln 2
B. -r ln 2
C. 3 r ln 2
D. -3r ln 2
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For grinding of softer materials, the grinding wheel should have _________________ grain size ?
A. Finer
B. Coarser
C. Medium
D. Any type of
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A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ______________ metre?
A. 0.01
B. 0.1
C. 0.25
D. 0.5
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Production of one ton of paper in Indian paper industry consumes about ____________ kWh of electricity ?
A. 300
B. 800
C. 1400
D. 2000
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The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge) ?
A. X1.5
B. X0.8
C. X-1.5
D. X-0.8
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Exposure to _________________ accelerates the degradation of plastics?
A. Ultraviolet radiation
B. High atmospheric temperature
C. High ambient temperature
D. Damp atmosphere
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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