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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

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.
Gross heating value of coal is ______________ the net heating value?
A Higher than
B Lower than
C Same as
D None of these
Correct Answer: Higher than
The internal energy of the combustion products is ____________________ compared to that of reactants?
A More
B Less
C Equal
D More or less; (depends on the state of fuel.)
Correct Answer: Less
Lignite is ___________________?
A A high rank coal
B A coking coal
C Can be used for gasification and steam generation
D A black banded coal which burns with a non-smoky yellowish flame
Correct Answer: Can be used for gasification and steam generation
High pressure coal gasification is employed in ________________ process?
A Lurgi
B Kopper-Totzek
C Winkler
D None of these
Correct Answer: Lurgi
Use of pulverised coal in boiler furnace provides___________________?
A High calorific value
B Better combustion
C Smokeless burning
D Less erosion on furnace walls
Correct Answer: Better combustion
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