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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 has the highest flame speed ?
A CO
B H2
C CH4
D C2H6
Correct Answer: H2
Which of the following fuels is generally not used in thermal power plant boiler firing ?
A Furnace oil, light diesel oil and tar/PCM
B Pulverised coking coal
C Coal middling from washeries
D B.F. gas, coke oven gas and L.D. converter gas
Correct Answer: Pulverised coking coal
Use of excess of combustion air in the combustion of fuels results in__________________?
A Heat losses
B Long flame
C Condensation of water vapour from the fuel gas
D None of these
Correct Answer: Heat losses
Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the___________________?
A Requirement of large volume combustion chamber
B Risk of explosion
C Chances of clinker formation
D Incomplete combustion of coal
Correct Answer: Risk of explosion
Which of the following is called “blue gas”?
A Coke oven gas
B Water gas
C Natural gas
D Producer gas
Correct Answer: Water gas
Rate of low temperature oxidation of coal due to bad storage conditions_______________?
A Decreases with increase in surface area
B Does not vary with increase in surface area
C Is more for low volatile coal compared to high volatile coal
D Is accelerated by storage in large heaps with small surface to volume ratio
Correct Answer: Is accelerated by storage in large heaps with small surface to volume ratio
Dust content in raw blast furnace gas is about _______________ gm/Nm3; hence it is cleaned to the dust level of about < 10 mg /Nm3 before use?
A 15-30
B 1-2
C 70-100
D 150-200
Correct Answer: 15-30
When steam is passed over coal resulting in the endothermic reaction represent by, C + H2O = CO + H2, it is called the _______________ of coal?
A Carbonisation
B Oxidation
C Coalification
D Gasification
Correct Answer: Gasification
Flue gas discharge velocity through chimney of a big thermal power plant may be around ________________ m/sec?
A 0.5
B 10
C 50
D 500
Correct Answer: 10
Bomb calorimeter is used for the determination of calorific value of the _____________ fuels?
A Gaseous
B Solid
C Liquid
D Both B. and C.
Correct Answer: Both B. and C.
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