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.Management Sciences
A. Not required to resist the corrosive action of basic slag
B. Not subjected to fluctuation in temperature
C. Used for raising & maintaining high temperature
D. Both B. and C.
Related Mcqs:
- Roof of a basic open hearth furnace is lined with ______________ bricks?
- A. Silica B. Fireclay C. Dolomite D. Magnesite...
- Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?
- A. Aluminium phosphate B. Water C. Lime D. Plaster of Paris...
- Firing temperature of magnesite bricks is about _____________ °C?
- A. 800-1000 B. 1000-1200 C. 1600-1800 D. 2400-2600...
- To resist spalling tendency, a refractory should have________________?
- A. Greater diffusivity B. Low specific heat C. Low thermal co-efficient of expansion D. All A., B. and C....
- Zirconia refractories are not used in_____________________?
- A. Making sheaths for thermocouple B. Lining high temperature ceramic kilns C. Furnaces subjected to fluctuating temperature D. High frequency induction furnaces in the form of inductors...
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