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.Management Sciences
A. Preheating
B. Cooling
C. Burning
D. All the above
Related Mcqs:
- Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about ______________ percent?
- A. 5 B. 20 C. 35 D. 55...
- Graphite or carbon refractories______________________?
- A. Exhibit wetting characteristics B. Should be used in neutral or reducing atmosphere C. Exhibit high shrinkage on thermal treatment D. Are not resistant to corrosion by slag...
- _____________ is not a single oxide-refractory?
- A. Zirconia B. Silicon carbide C. Magnesia D. None of these...
- Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the_________________?
- A. Washing action of metal B. Corrosion by layer of slag C. Both A. & B. D. Neither A. nor B....
- Walls, roofs & combustion chambers of annealing furnaces are made of ______________ bricks?
- A. High duty fireclay B. Silica C. Mullite D. Carborundum...
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