Chemical Engineering MCQs

6108 MCQs  (Page 14 of 611)

Attempt Chemical Engineering Quiz
Which of the following materials has the least scrap value ?
A. Aluminium
B. Stainless steel
C. Brass
D. Copper
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Which of the following is used to produce draught in the locomotive boilers ?
A. Chimney
B. Induced draught fan
C. Forced draught fan
D. Steam jet arrangement
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Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is____________________?
A. Very low which prevents their ignition by compression
B. Very high which prevents their ignition by compression
C. Zero
D. None of these
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The process of removal of scale formed during hot rolling of steel is termed as_________________?
A. Descaling
B. Shot blasting
C. Pickling
D. Skimming
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Boiling point of water gets lowered at high altitudes (e.g., hills), because ___________________?
A. Temperature is low
B. Atmospheric pressure is low
C. Atmospheric pressure is high
D. None of these
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The leaching solvent used in Baeyer’s process for the purification of bauxite is___________________?
A. Ammonium hydroxide
B. Sodium carbonate
C. Sodium hydroxide
D. Ammonium carbonate
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With increase in annealing temperature, the following defect density decreases?
A. Vacancy
B. Dislocation
C. Grain boundary
D. All of these
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A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?
A. Aqueous tension
B. Saturated humidity
C. Vapor pressure
D. Absolute humidity
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Addition of _______________ to steel does not help in improving its machinability ?
A. Sulphur
B. Silicon
C. Lead
D. Phosphorous
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Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than ?
A. 5
B. 10
C. 20
D. 35
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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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