Chemical Engineering MCQs

6108 MCQs  (Page 343 of 611)

Attempt Chemical Engineering Quiz
In chemical process equipments, the conical bottom heads used, usually has an apex angle of____________________?
A. 20°
B. 40°
C. 60°
D. 80°
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Si percentage in silica refractories used in the walls of coke oven is about______________________?
A. 45
B. 60
C. 80
D. 95
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Chrome magnesite bricks are_________________?
A. Acidic in nature
B. Neutral in nature
C. Having higher rul than silica bricks
D. Made by mixing 30% chromite and 70% periclase
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Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?
A. 10
B. 15
C. 20
D. 30
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Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?
A. Soaking pits
B. Reheating furnace
C. L.d. converter
D. Rotary lime kiln
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Lower part of hot metal mixer are lined with _____________ bricks?
A. Superduty fireclay
B. High alumina
C. Silica
D. Carborundum
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Bauxite calcining rotary kilns are lined with ________________ bricks?
A. Fireclay
B. Carbon
C. 85% alumina
D. Corundum
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Spalling of a refractory means its____________________?
A. Softening
B. Fracture due to uneven expansion at high temperature
C. Resistance to compressive loads
D. Resistance to chemical action of gases and molten fluxes
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The linear thermal expansion of _______________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent?
A. Fireclay
B. Silica
C. Magnesite
D. Corundum
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Chrome magnesite is not used in the ____________________?
A. Inner lining of l.d. converter
B. Aluminium melting furnaces
C. Wear out lining of steel melting furnaces
D. All a., and b. and c.
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Word of the Day
27 Jul
Widen
make or become wider.
چوڑا ہونا، کشادہ کرنے کا عمل

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