Refractory Technology Zirconia refractory Is produced from baddeleyite Has poor electrical conductivity at high temperature Can not be used as an insulator Does not react with basic slags Is produced from baddeleyite Has poor electrical conductivity at high temperature Can not be used as an insulator Does not react with basic slags ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the Hearth of the blast furnace Nuclear reactors, missiles & space crafts Insulation of high temperature furnaces Roof of electric furnaces Hearth of the blast furnace Nuclear reactors, missiles & space crafts Insulation of high temperature furnaces Roof of electric furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are used in 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 Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica below 870°C ? Cristobalite Tridymite None of these Quartz Cristobalite Tridymite None of these Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 800-1000 2400-2600 1600-1800 1000-1200 800-1000 2400-2600 1600-1800 1000-1200 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Electrical resistor bars are made of Zirconia Silicon carbide Graphite Alumina Zirconia Silicon carbide Graphite Alumina ANSWER DOWNLOAD EXAMIANS APP
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