Refractory Technology Which one expands on heating? Silica bricks Both A & B Neither A nor B Fireclay bricks Silica bricks Both A & B Neither A nor B Fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 30 20 10 15 30 20 10 15 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? All of these Tridymite Cristobalite Quartz All of these Tridymite Cristobalite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractory Is produced from baddeleyite Can not be used as an insulator Has poor electrical conductivity at high temperature Does not react with basic slags Is produced from baddeleyite Can not be used as an insulator Has poor electrical conductivity at high temperature Does not react with basic slags ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With decrease in porosity, the __________ of the refractories decreases. None of these Thermal conductivity Strength Spalling resistance None of these Thermal conductivity Strength Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High thermal conductivity of a refractory material is not important, when it is to be used in the Recuperators Coke oven regenarators Blast furnace Muffle furnace Recuperators Coke oven regenarators Blast furnace Muffle furnace ANSWER DOWNLOAD EXAMIANS APP
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