Refractory Technology Which is the stable form of silica below 870°C ? Quartz None of these Cristobalite Tridymite Quartz None of these Cristobalite Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractories are not used in Making sheaths for thermocouple Furnaces subjected to fluctuating temperature High frequency induction furnaces in the form of inductors Lining high temperature ceramic kilns Making sheaths for thermocouple Furnaces subjected to fluctuating temperature High frequency induction furnaces in the form of inductors Lining high temperature ceramic kilns ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 20 10 15 30 20 10 15 30 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are never used for lining the By-product coke ovens Beehive coke ovens Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens Roof of open hearth furnace Dome of blast furnace stoves ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silicon carbide refractories are used in the Ceramic recuperators All of these Zinc smelting furnace Muffle furnace Ceramic recuperators All of these Zinc smelting furnace Muffle furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by 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 Increasing its porosity Decreasing its thermal co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
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