Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? All of these Al2O₃ SiO₂ CaO All of these Al2O₃ SiO₂ CaO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Crystalline magnesia Zirconium sulphate Silicon nitride Silicon carbide Crystalline magnesia Zirconium sulphate Silicon nitride Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The main raw material for manufacture of silicon carbide refractories is Carborundum Bauxite Corrundum Periclase Carborundum Bauxite Corrundum Periclase ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by Increasing its porosity Decreasing its thermal co-efficient of expansion Using a coarser grog during its manufacture Making it denser Increasing its porosity Decreasing its thermal co-efficient of expansion Using a coarser grog during its manufacture Making it denser ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An indication of degree of firing in silica brick is its None of these RUL Fusion point Specific gravity None of these RUL Fusion point Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is the measure of the strength of refractory under the combined effect of temperature & load. Porosity Specific gravity Thermal conductivity RUL Porosity Specific gravity Thermal conductivity RUL ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS