__________ is the measure of the strength of refractory under the combined effect of temperature & load.
A. Porosity
B. RUL
C. Specific gravity
D. Thermal conductivity
Answer: Option B
A. Porosity
B. RUL
C. Specific gravity
D. Thermal conductivity
Answer: Option B
Fusion point of an acidic refractory material is
A. Increased by the addition of basic oxides
B. Reduced by the addition of basic oxides
C. Not affected by the addition of basic oxides
D. None of the above
Which of the following is not a high alumina refractory material?
A. Kyanite
B. Sillimanite
C. Diaspore
D. Periclase
Magnesite refractories are generally not used in the
A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns
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