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.Management Sciences
A. Does not react with basic slags
B. Is produced from baddeleyite
C. Cannot be used as an insulator
D. Has poor electrical conductivity at high temperature
Related Mcqs:
- 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...
- Machine moulding of dry mixture of refractories requires a pressure of the order of _____________ kg/cm2?
- A. 10 B. 100 C. 500 D. 1000...
- SiO2 percentage in firebrick is about____________________?
- A. 35-40 B. 55-60 C. 80-85 D. > 94...
- Spalling resistance of a refractory cannot be increased by ____________________?
- A. Increasing its porosity B. Using a coarser grog during its manufacture C. Decreasing its thermal co-efficient of expansion D. Making it denser...
- Fireclay refractories have __________________?
- A. Low co-efficient of thermal expansion B. Poor thermal spalling resistance C. Tendency to expand unduly high during firing D. Very high cost...
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