Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Both A & B Neither A nor B Cooling down Warming up Both A & B Neither A nor B Cooling down Warming up ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Always less than 1000°C Not affected by the addition of acid oxides Increased by the addition of acid oxides Reduced by the addition of acid oxides Always less than 1000°C Not affected by the addition of acid oxides Increased by the addition of acid oxides Reduced by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a natural insulating material? None of these Diatomaceous earth/kieselgur Vermiculite Asbestos None of these Diatomaceous earth/kieselgur Vermiculite Asbestos ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Silicon nitride Crystalline magnesia Zirconium sulphate Silicon carbide Silicon nitride Crystalline magnesia Zirconium sulphate Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. Insulating Basic High alumina Neutral Insulating Basic High alumina Neutral ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories have very high Both B and C Wetting characteristics Refractoriness Thermal conductivity Both B and C Wetting characteristics Refractoriness Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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