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 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 Nuclear reactors, missiles & space crafts Hearth of the blast furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are used in the All of these Flues Furnaces allowed to cool frequently Chimney linings All of these Flues Furnaces allowed to cool frequently Chimney linings ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Porosity Thermal conductivity Strength Specific gravity Porosity Thermal conductivity Strength Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silliminite (Al2O₃.SiO₂) refractory, which is a neutral refractory, is not used in Glass melting furnace Pottery furnace Gas retorts Crucibles Glass melting furnace Pottery furnace Gas retorts Crucibles ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory None of these Castables Mortars Cements None of these Castables Mortars Cements 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 thermal conductivity High crushing strength None of these Non-wetting characteristic High thermal conductivity High crushing strength None of these Non-wetting characteristic ANSWER DOWNLOAD EXAMIANS APP
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