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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

With increase in calorific value of fuels, their adiabatic flame temperatures__________________?
A Increase
B Decrease
C Remain unchanged
D May increase or decrease; depends on the quantity of products of combustion
Correct Answer: May increase or decrease; depends on the quantity of products of combustion
Which of the following is not applicable to fluidised bed combustion of coal ?
A It cannot burn low grade coal
B It achieves higher fuel combustion efficiency
C Less heat transfer surface area is required in boilers
D None of these
Correct Answer: It cannot burn low grade coal
Efficiency of the combustion of a fuel is judged by the ______________ the flue gas?
A % of CO2 in
B % of O2in
C Temperature of
D Colour of
Correct Answer: % of O2in
Preheating of a gaseous fuel results in increased____________________?
A Flame length
B Flame temperature
C Quantity of flue gas
D Ignition temperature
Correct Answer: Flame temperature
Mineral matter content (M) and ash content A. in coal are approximately related as _______________?
A M = 1.1A
B M = A
C M = 1.5A
D M = 2A
Correct Answer: M = 1.1A
Which of the following gaseous fuels is likely to have the highest gross calorific value ?
A Sewage gas
B LPG
C Producer gas
D Natural gas
Correct Answer: LPG
Coke oven gas compared to blast furnace gas is________________?
A More explosive and inflammable
B Less poisonous
C Lighter
D All A., B. and C.
Correct Answer: All A., B. and C.
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction ?
A 2CO ↔ C + CO2
B CO + H2O ↔ CO2 + H2
C C + H2O ↔ CO + H2
D C + 2H2O ↔ CO2 + 2H2
Correct Answer: 2CO ↔ C + CO2
Calorific value of gobar gas (containing CH4 = 60% , H2 = 10% ; CO2 = 30%) may be about ______________ Kcal/Nm3?
A 1,800
B 3,200
C 5,400
D 10,200
Correct Answer: 5,400
Calorific value as determined by bomb calorimeter is the__________________?
A Higher calorific value at constant volume
B Gross calorific value at constant pressure
C Lower calorific value at constant pressure
D Net calorific value at constant volume
Correct Answer: Higher calorific value at constant volume
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