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