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.Management Sciences
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
Related Mcqs:
- Grog addition in fireclay during brick manufacture is done to_________________?
- A. Reduce its shrinkage on heating B. Impart greater spalling resistance C. Enhance the strength of fired refractories D. All A., B. and C....
- Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the_______________?
- A. Hearth of the blast furnace B. Nuclear reactors, missiles & space crafts C. Insulation of high temperature furnaces D. Roof of electric furnaces...
- An indication of degree of firing in silica brick is its____________________?
- A. Specific gravity B. Fusion point C. RUL D. None of these...
- Which furnace consumes maximum refractory annually in an integrated steel plant ?
- A. Soaking pit B. Blast furnace C. L.D. converter D. Coke ovens...
- Mullite is chemically represented by_________________?
- A. Al2O3. 2SiO2 B. 3Al2O3. 2SiO2 C. Al2O3. SiO2 D. 2Al2O3. 3SiO2...
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