Chemical Engineering MCQs

6108 MCQs  (Page 48 of 611)

Attempt Chemical Engineering Quiz
Rankine cycle comprises of two isothermal and two ___________________ processes?
A. Isobaric
B. Polytropic
C. Isentropic
D. None of these
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According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to _______________ times the yield stress ?
A. 0.5
B. 2
C. √2
D. √3/2
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Enzymes belong to the category of_____________________?
A. Proteins
B. Carbohydrates
C. Vitamins
D. Fats
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Dielectric___________________?
A. Is an electrical insulating material
B. Of low resistivity is preferred
C. Should have high thermal conductivity
D. Need not defy the corrosive action of chemicals
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Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog ?
A. Nitrogen oxides
B. Hydrocarbons
C. Both a. & b.
D. Carbon monoxide
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Dry saturated steam can be converted into super heated steam by____________________?
A. Increasing its cross-sectional area of flow
B. Passing it through a pressure reducing valve
C. Forcing it downwards through a vertical tube
D. None of these
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Ultimate strength in tension as compared to that in shear for steel is____________________?
A. Half
B. One third
C. One and half times
D. One fourth
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Fatigue resistance of a material is measured by the _____________________?
A. Elastic limit
B. Ultimate tensile strength
C. Young’s modulus
D. Endurance limit
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The Al2O3 content of cryolite in Hall-Heroult cell is maintained between _______________ percent ?
A. 2-5
B. 18-20
C. 12-15
D. 6-12
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Hot working of lead is carried out at ___________________?
A. 75°c
B. 373°k
C. 150°c
D. Room temperature
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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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