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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

____________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold?
A High thermal conductivity
B Low porosity
C Non-wetting characteristics
D High density
Correct Answer: Non-wetting characteristics
Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of ______________ percent respectively?
A 80 and 20
B 20 and 80
C 50 and 50
D 60 and 40
Correct Answer: 80 and 20
Chrome magnesite brick is not used for lining the___________________?
A Hearth of soaking pits
B Bottom hearth of reheating furnace
C Coke oven regenerator
D Burning zone of limestone rotary kilns
Correct Answer: Coke oven regenerator
_____________ is not a single oxide-refractory?
A Zirconia
B Silicon carbide
C Magnesia
D None of these
Correct Answer: Silicon carbide
High alumina refractories are used in the ___________________?
A Dome of blast furnace stoves
B Electric arc furnace roof
C Glass melting furnaces
D All A., B. and C.
Correct Answer: All A., B. and C.
Thermal spalling mainly occurs during _____________ of furnaces?
A Cooling down
B Warming up
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Which is the stable form of silica upto 1470°C ?
A Quartz
B Cristobalite
C Tridymite
D None of these
Correct Answer: Tridymite
Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the_______________?
A Hearth of the blast furnace
B Nuclear reactors, missiles & space crafts
C Insulation of high temperature furnaces
D Roof of electric furnaces
Correct Answer: Nuclear reactors, missiles & space crafts
Zircon refractories have__________________?
A Low co-efficient of expansion
B High RUL (1600°C) and refractoriness (> 2000°C)
C High spalling resistance
D All A., B. and C.
Correct Answer: All A., B. and C.
Chromite refractories_____________________?
A Are bonded with lime and clay
B (Free from silica) have better thermal fatigue resistance than silica and magnesite refractories.
C Are resistant to basic slag
D All A., B. and C.
Correct Answer: All A., B. and C.
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