Refractory Technology Which is the stable form of silica below 870°C ? Tridymite Quartz Cristobalite None of these Tridymite Quartz Cristobalite None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases Remains unchanged Increases Decreases linearly Decreases Remains unchanged Increases Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ nozzles are used in continuous casting of steel, Beryllia Carborundum Thoria Zircon Beryllia Carborundum Thoria Zircon ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity is induced in insulating refractories by adding Ammonium chloride/sulphate Calcium phosphate Powdered naphthalene All of these Ammonium chloride/sulphate Calcium phosphate Powdered naphthalene All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 60 45 80 95 60 45 80 95 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dilatometer is used for the determination of __________ of refractories. Permanent linear change Resistance to CO attack Modulus of rupture RUL Permanent linear change Resistance to CO attack Modulus of rupture RUL ANSWER DOWNLOAD EXAMIANS APP
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