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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

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
Fusion point of a basic refractory material is________________?
A Reduced by the addition of acid oxides
B Increased by the addition of acid oxides
C Not affected by the addition of acid oxides
D Always less than 1000°C
Correct Answer: Reduced by the addition of acid oxides
Fireclay bricks are used in the______________?
A Coke ovens regenerator
B Outer lining of L.D. converter
C Hearth bottom of blast furnace
D Coke oven walls
Correct Answer: Coke ovens regenerator
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
Hot metal runner in blast furnace are lined with ______________ bricks?
A Silica
B Carborundum
C Fireclay
D Magnesite
Correct Answer: Fireclay
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
Chemically, mullite refractories is________________?
A 3Al2O3.2SiO2
B Al2O3
C ZrSO4
D ThO2
Correct Answer: 3Al2O3.2SiO2
Panel test determines the ______________ of refractories?
A Fusion point
B Spalling resistance
C Slag penetration resistance
D Refractoriness under load (RUL)
Correct Answer: Spalling resistance
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