Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Silicon carbide Silicon nitride Zirconium sulphate Crystalline magnesia Silicon carbide Silicon nitride Zirconium sulphate Crystalline magnesia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Aluminous firebrick Firebrick Sillimanite Semi-silica Aluminous firebrick Firebrick Sillimanite Semi-silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dilatometer is used for the determination of __________ of refractories. Resistance to CO attack RUL Modulus of rupture Permanent linear change Resistance to CO attack RUL Modulus of rupture Permanent linear change ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Segar cones are used for the determination of __________ of refractories. Spalling resistance Electrical conductivity Softening temperature Resistance to slag attack Spalling resistance Electrical conductivity Softening temperature Resistance to slag attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Presence of impurities like iron & alkali All of these Physical structure Chemical composition Presence of impurities like iron & alkali All of these Physical structure Chemical composition ANSWER DOWNLOAD EXAMIANS APP
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