Refractory Technology The main raw material for manufacture of silicon carbide refractories is Bauxite Corrundum Carborundum Periclase Bauxite Corrundum Carborundum Periclase ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory None of these Castables Cements Mortars None of these Castables Cements Mortars ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Insulating refractories should have Both A & B Neither A nor B High porosity Low thermal conductivity Both A & B Neither A nor B High porosity Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Conversion of silica mineral to cristobalite is accompanied by reduction in its Volume Neither A nor B Both A & B Specific gravity Volume Neither A nor B Both A & B Specific gravity 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 Roof of electric furnaces Insulation of high temperature furnaces Hearth of the blast furnace Nuclear reactors, missiles & space crafts Roof of electric furnaces Insulation of high temperature furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology SiO₂ percentage in firebrick is about 55-60 35-40 80-85 >94 55-60 35-40 80-85 >94 ANSWER DOWNLOAD EXAMIANS APP
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