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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

Naphthalene is used for making_________________?
A Insecticides (e.g. moth balls)
B Unsaturated polyesters
C Drug intermediates e.g. β-naphthol
D All A., B. and C.
Correct Answer: All A., B. and C.
Dry air requirement for burning 1 Nm3 of CO to CO2 may be around _______________ Nm3 ?
A 2.4
B 1.75
C 0.87
D 11.4
Correct Answer: 2.4
In flue gas analysis by Orsat’s apparatus, oxygen is absorbed by____________________?
A Potassium hydroxide
B Cuprous chloride
C Alkaline pyrogallol solution
D None of these
Correct Answer: Alkaline pyrogallol solution
Blast furnace coke is made from coal by_____________________?
A Low temperature carbonisation
B High temperature carbonisation
C Medium temperature carbonisation
D Heating the coal in an oven in presence of air
Correct Answer: High temperature carbonisation
For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?
A Increase
B Decrease
C Increase or decrease depending on the fuel type
D Not change
Correct Answer: Decrease
Low temperature carbonisation of coal produces_________________?
A Metallurgical coke
B Soft coke
C Very low calorific value coke oven gas
D No by-products
Correct Answer: Soft coke
Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around ______________ cm/hr?
A 2.5
B 0.5
C 10
D 20
Correct Answer: 2.5
A coal having higher volatile matter content will necessarily have lower____________________?
A Ash fusion temperature
B Calorific value
C Ignition temperature
D Caking index
Correct Answer: Ignition temperature
Function of secondary air in pulverised coal firing is to_________________?
A Transport the coal to the burner
B Dry the coal
C Ensure efficient burning of coal around the burner
D Reduce primary air requirement
Correct Answer: Ensure efficient burning of coal around the burner
The advantage of firing pulverised coal in the furnace lies in the fact, that it____________________?
A Permits the use of high ash content coal
B Permits the use of low fusion point ash coal
C Accelerates the burning rate and economises on fuel combustion
D All A., B. and C.
Correct Answer: Accelerates the burning rate and economises on fuel combustion
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