Refractory Technology Conversion of silica mineral to cristobalite is accompanied by reduction in its Neither A nor B Specific gravity Volume Both A & B Neither A nor B Specific gravity Volume Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are used in Both A & B Neither A nor B Bottom of soaking pits Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other Both A & B Neither A nor B Bottom of soaking pits Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ nozzles are used in continuous casting of steel, Thoria Beryllia Zircon Carborundum Thoria Beryllia Zircon Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High refractorinness of refractory bricks means, that it has a Low spalling resistance Low porosity High spalling resistance High resistance to fusion Low spalling resistance Low porosity High spalling resistance High resistance to fusion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Remains unchanged Increases Decreases linearly Decreases Remains unchanged Increases Decreases linearly Decreases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns. 2200 1800 2400 2700 2200 1800 2400 2700 ANSWER DOWNLOAD EXAMIANS APP
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