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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

A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be_________________?
A More
B Less
C Same
D Data insufficient; can’t be predicted
Correct Answer: Same
Bomb calorimeter can be used to determine the _____________ of the coal?
A Sulphur content
B Calorific value
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Largest constituent of coke oven gas is_________________?
A N2
B H2
C CH4
D CO2
Correct Answer: H2
The maximum adiabatic flame temperature in air is _____________ the maximum flame temperature in pure oxygen?
A Lower than
B Higher than
C Same as
D Not related to
Correct Answer: Lower than
The main drawback of supplying more excess air in the combustion of fuel is the_________________?
A Excessive power requirement of air blower
B Enhanced sensible heat loss in the flue gas
C Intermittent and uncontrolled combustion of the fuel
D High exit flue gas temperature from the furnace
Correct Answer: Enhanced sensible heat loss in the flue gas
Bunsen burner is an example of a/an _____________ burner?
A Inside mixing/premix type
B Outside mixing/diffusion flame/nozzle mix type
C Rotary cup
D Submerged combustion
Correct Answer: Inside mixing/premix type
Bulk density of pulverised coal may be about ______________ kg/m3?
A 100
B 500
C 1000
D 1500
Correct Answer: 500
Which of the following would require least amount of secondary air for combustion ?
A Coke breeze containing 25% ash and 2% volatile matter
B Anthracite containing 10% volatile matter and 8% ash
C Bituminous coal containing 20% ash and 25% volatile matter
D Semi-bituminous coal containing 25% ash and 20% volatile matter
Correct Answer: Coke breeze containing 25% ash and 2% volatile matter
Calorific value of blast furnace gas is around _____________ KCal/Nm3?
A 850
B 1800
C 4200
D 6500
Correct Answer: 850
Nitrogen in coal_________________?
A Is present upto 1-2%
B Comes from protein in parent vegetable matter
C Is recovered as ammonia during its carbonisation
D All A., B. and C.
Correct Answer: All A., B. and C.
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