Chemical Engineering MCQs

6108 MCQs  (Page 53 of 611)

Attempt Chemical Engineering Quiz
During sensible cooling of air, its wet bulb temperature ?
A. Decreases but dew point remains constant
B. Increases but dew point remains constant
C. Increases & the dew point decreases
D. Decreases & the dew point increases
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During sensible heating of humid air__________________?
A. Relative humidity increases
B. Dew point remains constant
C. Dry bulb & wet bulb temperature increases
D. Both b & c
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Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity) ____________________?
A. 1/k
B. K
C. K2
D. 1/k2
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_____________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C ?
A. Borosilicate
B. High silica
C. Supermax
D. Lead
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Cold working of a material results in increase in hardness, which is termed as the ______________ hardening ?
A. Cold
B. Work
C. Age
D. Induction
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Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the___________________?
A. Length of the pipe
B. Diameter of the pipe
C. Density of the fluid
D. Velocity of the fluid
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Softening of hardened steel is done by its____________________?
A. Normalising
B. Tempering
C. Annealing
D. Carburising
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Potable water means the water used for____________________?
A. Fire-fighting
B. Cooling
C. Drinking
D. Evaporation to produce steam
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Which of the following gases cause global warming ?
A. Carbon monoxide
B. Carbon dioxide
C. Nitrogen
D. Ozone
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Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about ____________________?
A. 9 : 1
B. 17 : 1
C. 23 : 1
D. 29 : 1
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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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