M C Q s D r i v e

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.

Roof of a basic electric furnace is made of _____________ bricks?
A Superduty fireclay
B Silica
C Chromite
D None of these
Correct Answer: Silica
Outer combustion chamber of blast furnace stove is lined with _____________ bricks?
A Fireclay
B Silica
C Chrome magnesite
D Zirconia
Correct Answer: Fireclay
Magnesite refractories are used for the construction of those furnaces, which are________________?
A Not required to resist the corrosive action of basic slag
B Not subjected to fluctuation in temperature
C Used for raising & maintaining high temperature
D Both B. and C.
Correct Answer: Both B. and C.
Test piece for determination of RUL of a refractory is heated in a/an____________________?
A Oxidising atmosphere
B Reducing atmosphere
C Electric furnace
D Neutral atmosphere
Correct Answer: Electric furnace
With increase in the alumina content, the refractoriness of high alumina refractories_______________?
A Increases
B Decreases
C Remain same
D May increase or decrease
Correct Answer: Increases
Thermal diffusivity of a refractory brick is high, when its ____________ is high?
A Density
B Specific heat
C Thermal conductivity
D None of these
Correct Answer: Thermal conductivity
Magnesite refractories are generally not used in the___________________?
A Electric furnace walls
B Steel melting furnace
C Open hearth furnace
D Burning zone of cement kilns
Correct Answer: Steel melting furnace
High porosity refractory bricks have _______________?
A Poor resistance to the penetration of molten slag, metal & flue gases
B Poor heat conductivity & low strength
C Better thermal spalling resistance
D All A., B. and C.
Correct Answer: All A., B. and C.
Fireclay bricks are not used in the _________________?
A Beehive coke oven
B By-product coke oven walls
C Combustion chamber of B.F. stoves
D Coke oven regenerators
Correct Answer: By-product coke oven walls
Presence of MgO in alumino-silicate refractories _______________ its refractoriness?
A Increases
B Lowers
C Does not affect
D Either A. or B.; depends on its quantity
Correct Answer: Lowers