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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

Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace ?
A Economiser
B Regenerator
C Ceramic recuperator
D Waste heat boiler
Correct Answer: Regenerator
Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace ?
A Increase in calorific value of the fuel
B Increase in flame temperature
C Reduction in scale losses
D Saving in fuel consumption
Correct Answer: Increase in calorific value of the fuel
An example of a periodic furnace is the__________________?
A Blast furnace stoves
B Blast furnace
C Coke oven heating chamber
D Rotary kilns
Correct Answer: Blast furnace stoves
Which of the following variables does not affect the furnace capacity ?
A Size of the furnace
B Gas velocity in furnace
C Ratio of wall surface to surface of stock
D None of these
Correct Answer: None of these
Circulation of gases in furnace is caused by the_________________?
A Change in volume during a change of temperature
B Difference in density between hot and cold gases
C Furnace pressure in conjunction with draft in flues
D All A., B. and C.
Correct Answer: All A., B. and C.
Which is not accomplished in an underfired furnace ?
A Increase in heating capacity/m2 of floor space
B Elimination of cold spot at the bottom of the charge
C Reduction in the temperature of furnace gases
D Protection of the periphery of the charge from excessive radiation
Correct Answer: Increase in heating capacity/m2 of floor space
The purpose of controlling the furnace atmosphere is to prevent surface attack by__________________?
A Oxidation/scaling
B Decarburising
C Sulphur penetration
D Either of the above
Correct Answer: Either of the above
Regenerators as compared to recuperators for the same duty_________________?
A Store smaller quantity of waste heat
B Are lighter & compact
C Involve higher initial cost
D All A., B. & C.
Correct Answer: Involve higher initial cost
Dampers are located__________________?
A Before the I.D fan
B After the I.D. fan
C Near the top of the chimney
D Anywhere after the I.D. fan
Correct Answer: Before the I.D fan
The resistance furnace produces heat by the__________________?
A Electric arc struck between electrodes and the charge
B Flow of current through a heating element
C Combination of induced current and skin effect
D None of these
Correct Answer: Flow of current through a heating element
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