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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:
- Refractory castables are used for__________________?
- A. Producing monolithic linings B. Patch work C. Minimising the number of joints in the structure D. All A., B. and C....
- Zircon refractories have__________________?
- A. Low co-efficient of expansion B. High RUL (1600°C) and refractoriness (> 2000°C) C. High spalling resistance D. All A., B. and C....
- Which is not an alumino-silicate refractory ?
- A. Fireclay bricks B. Mullite bricks C. Tar dolomite bricks D. High alumina bricks...
- The main raw material for manufacture of silicon carbide refractories is_________________?
- A. Corundum B. Carborundum C. Bauxite D. Periclase...
- Sillimanite is a _____________ refractory?
- A. Basic B. Neutral C. High alumina D. Insulating...
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