Refractory Technology Chemically, mullite refractories is 3Al2O₃.2SiO₂ ThO₂ Al2O₃ ZrSO₄ 3Al2O₃.2SiO₂ ThO₂ Al2O₃ ZrSO₄ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Mullite is chemically represented by Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ 2Al2O₃ . 3SiO₂ Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ 2Al2O₃ . 3SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the Decreased viscosity of slag Increased thermal conductivity of brick Oxidising condition in the furnace None of these Decreased viscosity of slag Increased thermal conductivity of brick Oxidising condition in the furnace None of these 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 Roof of electric furnaces Insulation of high temperature furnaces Nuclear reactors, missiles & space crafts Hearth of the blast furnace Roof of electric furnaces Insulation of high temperature furnaces Nuclear reactors, missiles & space crafts ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a basic refractory? Silicon carbide Dolomite Magnesite Chrome magnesite Silicon carbide Dolomite Magnesite Chrome magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? Low porosity Both A & B Neither A nor B High thermal conductivity Low porosity Both A & B Neither A nor B High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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