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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

Coke ovens in steel plant are heated by ___________________?
A Electricity
B Coke oven gas
C Mixed gas
D Both B. & C.
Correct Answer: Both B. & C.
Soft coke is not ___________________?
A Produced by low temperature carbonisation of coal
B A domestic fuel
C Used in blast furnaces
D None of these
Correct Answer: Used in blast furnaces
Percentage of hydrogen in coke oven gas may be around ___________________?
A 10
B 25
C 45
D 60
Correct Answer: 60
A coal with high ash content is undesirable, as________________?
A It is abrasive to the coal pulveriser (i.e. ball mill) and the combustion chamber
B The ash in molten condition gets absorbed in the pores of the refractory lining of the furnace
C The ash retains the sulphur & phosphorus and thus affects the quality of products in
D All A., B. and C.
Correct Answer: All A., B. and C.
Which of the following is the most poisonous gas ?
A Coke oven gas
B Producer gas
C Blast furnace gas
D L.D. converter gas
Correct Answer: L.D. converter gas
Gross heating value of coal is ______________ the net heating value?
A Higher than
B Lower than
C Same as
D Either A. or B.; depends on the type of coal
Correct Answer: Higher than
Which of the following accentuates clinkering trouble on furnace grate burning coal ?
A Low reactivity of carbonised residue containing high proportions of iron & sulphur
B Low forced draught and fuel bed temperature
C Thick fire bed and preheated primary air
D All A., B. and C.
Correct Answer: All A., B. and C.
Increase in ash content of blast furnace coke_________________?
A Reduces its consumption in the furnace
B Increases its consumption in the furnace
C Does not affect its consumption in the furnace
D Decreases its hardness and abrasion resistance
Correct Answer: Increases its consumption in the furnace
The difference between total carbon and fixed carbon of coal will be minimum in case of___________________?
A Lignite
B Bituminous coal
C Anthracite
D High temperature coke (V.M < 0.5%)
Correct Answer: High temperature coke (V.M < 0.5%)
In high temperature carbonisation (as compared to low temperature carbonisation) of coal___________________?
A Coke oven gas yield is more
B Tar yield is less but free carbon in tar is more
C Calorific value of coke oven gas is less
D All A., B. and C.
Correct Answer: All A., B. and C.
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