Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Zirconium sulphate Crystalline magnesia Silicon nitride Silicon carbide Zirconium sulphate Crystalline magnesia Silicon nitride Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively. 20 and 80 60 and 40 80 and 20 50 and 50 20 and 80 60 and 40 80 and 20 50 and 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories are dried in the None of these Rotary kilns Sun Tunnel kilns None of these Rotary kilns Sun Tunnel kilns ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Firebrick Magnesite Sillimanite Aluminous firebrick Firebrick Magnesite Sillimanite Aluminous firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Fusion under load Thermal spalling CO attack Slag attack Fusion under load Thermal spalling CO attack Slag attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractory blocks Are used in the hearth of blast furnace All of these Are acidic in nature Are wetted by molten iron Are used in the hearth of blast furnace All of these Are acidic in nature Are wetted by molten iron ANSWER DOWNLOAD EXAMIANS APP
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