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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

Protective gas used in the annealing furnace for steel coil comprises of__________________?
A 95% N2 + 5% H2
B 5% H2 + 9% N2
C 100% CO
D 100% H2
Correct Answer: 95% N2 + 5% H2
Artificial draught produced by a fan in the furnace can be controlled by the___________________?
A Speed of the fan
B Damper
C Variation in the pitch of fan blades
D All A., B. and C.
Correct Answer: All A., B. and C.
Which of the following is the most suitable for preheating combustion air above 650°C ?
A Regenerator
B Metallic recuperator
C Ceramic recuperator
D None of these
Correct Answer: Ceramic recuperator
The electric furnace in which heat is produced by a combination of induced current and skin effect is called _____________ furnace?
A Arc
B Resistance
C Low frequency induction
D High frequency induction
Correct Answer: High frequency induction
Thermal efficiency of an open hearth furnace may be about _____________ percent?
A 5
B 20
C 50
D 80
Correct Answer: 20
Which of the following is not a directly fired furnace ?
A By-product coke oven
B Calcination kiln
C Sintering furnace
D Open hearth furnace
Correct Answer: By-product coke oven
Air filtration in a furnace___________________?
A Reduces its thermal efficiency
B Is indicated by flame sting out
C Increases the flue gas temperature
D None of these
Correct Answer: Reduces its thermal efficiency
Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above _____________ °C?
A 250
B 650
C 850
D 1000
Correct Answer: 650
Overfire burning in a furnace is a phenomenon characterised by____________________?
A Supply of excess fuel
B Supply of excess air
C Burning carbon monoxide and other incombustible in upper zone of furnace by supplying
D None of these
Correct Answer: Burning carbon monoxide and other incombustible in upper zone of furnace by supplying
Which is a continuous furnace ?
A Coke ovens
B Annealing furnace
C Glass tank furnace
D None of these
Correct Answer: Glass tank furnace
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