A. A ceramic material which becomes fluid upon heating and can be moulded in liquid/viscous state is termed s glass
B. Ceramic materials do not undergo vitrification on heating
C. Ceramic materials are brittle in nature
D. Non-oxide ceramic materials generally act as a semi-conductor
Answer: Option B
This Question Belongs to Chemical Engineering >> Refractory Technology
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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