M C Q s D r i v e

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

thumb

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.

Faster rate of drying of moulded refractories results in high _____________ of refractories?
A Green strength
B Voids
C Shrinkage
D Both B. and C.
Correct Answer: Both B. and C.
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