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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

Gas yield in the Kopper-Totzek coal gasifier is about ______________ Nm3/ton coal (ash = 35%)?
A 150
B 1500
C 3500
D 5000
Correct Answer: 150
Height of coke oven is limited (say maximum upto 7 metres) mainly by the_____________________?
A Problem of uniform heating along its height
B Structural strength of silica bricks
C Problem in door cleaning
D Buckling of ram of pusher car at the time of coke pushing
Correct Answer: Problem of uniform heating along its height
Steam is intermittently admitted into the fuel bed during the production of producer gas to__________________?
A Convert CO to CO2
B Increase the combustion rate
C Increase the gas production rate
D Minimise the chances of clinker formation
Correct Answer: Minimise the chances of clinker formation
Which of the following coke has the least percentage of ash ?
A Petroleum coke
B Beehive coke
C Foundry coke
D Metallurgical coke
Correct Answer: Petroleum coke
The weathering index of a coal________________?
A Gives an idea of the fusion temperature of ash
B Is related to its calorific value
C Is a measure of its size stability, when stored & exposed to weather
D Is a measure of its caking tendency
Correct Answer: Is a measure of its size stability, when stored & exposed to weather
Critical Air Blast (CAB) value of coke is a direct measure of its__________________?
A Reactivity
B Hardness
C Strength
D None of these
Correct Answer: Reactivity
A particular coal is said to be free burning when it __________________?
A Burns completely
B Gives smokeless burning
C Shows little or no fusing action
D None of these
Correct Answer: Shows little or no fusing action
Ultimate analysis of coal determines its _______________ content?
A Carbon, hydrogen, nitrogen & sulphur
B Carbon, ash, sulphur & nitrogen
C Carbon, sulphur, volatile matter & ash
D Carbon, volatile matter, ash & moisture
Correct Answer: Carbon, hydrogen, nitrogen & sulphur
Higher efficiency in the combustion of solid fuel cannot be achieved by________________?
A Proper fuel preparation
B Keeping the flue gas exhaust temperature very high
C Adopting efficient-fuel firing technique & equipment
D Supplying correct quantity of combustion air
Correct Answer: Keeping the flue gas exhaust temperature very high
If oxygen content in the flue gas rises too high, fuel is being wasted by _______________?
A Incomplete combustion
B Dry gas/stack gas loss
C Moisture loss
D None of these
Correct Answer: Dry gas/stack gas loss
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