Chemical Engineering MCQs

6108 MCQs  (Page 52 of 611)

Attempt Chemical Engineering Quiz
Coating provided on the electrodes used in the arc welding is not expected to_________________?
A. Add alloying elements
B. Prevent electrode from contamination
C. Stabilise the arc
D. Provide protective atmosphere to weld
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The type of pump used for lifting large quantity of sewage is a _________________ pump ?
A. Gear
B. Centrifugal
C. Reciprocating
D. Plunger
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Thermal conductivity of a material does not depend upon its_____________________?
A. Mass
B. Volume
C. Surface area
D. All a, c & c
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The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?
A. Evaporative capacity
B. Evaporation efficiency
C. Thermal efficiency
D. Steam load
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The excess air required for the combustion of pulverized coal is of the order of about _______________ percent ?
A. 5
B. 15
C. 30
D. 45
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Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by _____________ have residual stresses ?
A. Forging
B. Cold rolling
C. Hot rolling
D. Casting
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Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are _______________ respectively ?
A. 70 & 30
B. 30 & 70
C. 50 & 50
D. 90 & 10
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Heat release during phase change is observed in case of a/an_________________?
A. Boiler
B. Condenser
C. Evaporator
D. All a. b. & c.
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Carbon supply in pack carburising process is in the form of ___________________?
A. Charcoal
B. Calcium carbide
C. Hydrocarbon oil
D. Graphite
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Function of gear box is to____________________?
A. Reduce the speed
B. Obtain variable speed
C. Increase the speed
D. Produce high torque
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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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