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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

Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, because of its_______________?
A Non-wetting characteristic
B High thermal conductivity
C High crushing strength
D None of these
Correct Answer: Non-wetting characteristic
‘Super refractories’ are made from pure____________________?
A Carbides
B Oxides
C Borides
D Nitrides
Correct Answer: Oxides
Magnesite chrome refractories____________________?
A Have better spalling resistance than chrome magnesite refractories
B Have very low thermal co-efficient of expansion
C Are not at all resistant to the corrosive action of iron oxide
D Have very low (50 kg/cm2) cold crushing strength (C.C.S.), and cannot be used in metalcase
Correct Answer: Have better spalling resistance than chrome magnesite refractories
Use of higher percentage of lime for bonding silica bricks, reduces their__________________?
A Strength
B Abrasion resistance
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Addition of grog in fireclay brick during its manufacture is advantageous, because it results in_____________________?
A Less shrinkage in heating, decreased apparent porosity & increased specific gravity
B High strength & thermal spalling resistance
C Less addition of water to get a workable plasticity & lesser time required for drying the raw
D All A., B. and C.
Correct Answer: All A., B. and C.
Pyrometric cone equivalent (PCE) of a refractory is the measure of its_________________?
A Spalling resistance
B Fusion point
C Resistance to slag penetration
D Resistance to carbon monoxide attack
Correct Answer: Fusion point
Ramming masses are used for____________________?
A Obtaining monolithic working faces
B Repairing construction of various furnace parts
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Furnace atmosphere for softening temperature determination of refractories (in which Seger Cones are placed) should be __________________?
A Oxidising
B Neutral
C Either A. or B.
D Neither A. nor B.
Correct Answer: Either A. or B.
10 to 30% magnesite is added to Chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the _____________ of Chromite?
A Spalling resistance
B Refractoriness
C Crushing strength
D Resistance to slag
Correct Answer: Spalling resistance
Which brick undergoes maximum shrinkage on drying ?
A Tar bonded dolomite bricks
B Fireclay bricks
C Magnesite bricks
D Chromite bricks
Correct Answer: Fireclay bricks
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