Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Alumina Thoria Zirconia Magnesia Alumina Thoria Zirconia Magnesia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Neither A nor B Both A & B Cooling down Warming up Neither A nor B Both A & B Cooling down Warming up ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its High crushing strength None of these High thermal conductivity Non-wetting characteristic High crushing strength None of these High thermal conductivity Non-wetting characteristic 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 Nuclear reactors, missiles & space crafts Hearth of the blast furnace Insulation of high temperature furnaces Roof of electric furnaces Nuclear reactors, missiles & space crafts Hearth of the blast furnace Insulation of high temperature furnaces Roof of electric furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is an acidic refractory? Chrome magnesite Dolomite Magnesite Fireclay Chrome magnesite Dolomite Magnesite Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a natural insulating material? None of these Diatomaceous earth/kieselgur Asbestos Vermiculite None of these Diatomaceous earth/kieselgur Asbestos Vermiculite ANSWER DOWNLOAD EXAMIANS APP