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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

Thickness of stock does not affect the fuel economy of furnaces, if the material to be heated is of__________________?
A Low emissivity
B High thermal conductivity
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
An example of indirectly heated furnace is the_________________?
A Soaking pit
B Muffle furnace
C Reheating furnace
D None of these
Correct Answer: Muffle furnace
Neutral atmosphere is maintained in a/an ____________ furnace?
A Cold rolled steel coil annealing
B Open hearth
C Soaking pit
D Walking beam reheating
Correct Answer: Cold rolled steel coil annealing
The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about ____________ percent?
A 15
B 40
C 70
D 85
Correct Answer: 40
In low or standard frequency induction furnace, heat is produced by the_______________________?
A Combination of induced current and skin effect
B Induction and resistance
C Current flow through a heating element
D None of these
Correct Answer: Induction and resistance
The rate of scaling of furnace stock depends upon the_________________?
A Temperature
B Time
C Nature of atmosphere
D All A., B. and C.
Correct Answer: All A., B. and C.
The reason for excessive clinker formation in gas producers is the_____________________?
A Use of coal/coke containing a high % of fines and ash
B Use of fuel having too low an ash fusion temperature
C Development of hot spots in the fuel bed and an abnormally high rate of gasification
D All A., B. and C.
Correct Answer: All A., B. and C.
In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by__________________?
A Conduction
B Convection
C Radiation
D Cannot be predicted
Correct Answer: Radiation
Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the__________________?
A Physical nature, ash content and fineness of the coal
B Amount of excess air supplied and load on the boiler
C Type of burner and combustion chamber
D All A., B. and C.
Correct Answer: All A., B. and C.
Coke ovens in steel plant are heated by____________________?
A Electricity
B Blast furnace gas/mixed gas
C Coke oven gas
D Both B. and C.
Correct Answer: Both B. and C.
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