Refractory Technology 'Super refractories' are made from pure Borides Nitrides Oxides Carbides Borides Nitrides Oxides Carbides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Fracture due to uneven expansion at high temperature Softening Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads Fracture due to uneven expansion at high temperature Softening Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Cristobalite Quartz All of these Tridymite Cristobalite Quartz All of these Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories Are not resistant to the action of basic slags Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc All of these Shrink during firing Are not resistant to the action of basic slags Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc All of these Shrink during firing ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Preheating Burning All of these Cooling Preheating Burning All of these Cooling ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is an acidic refractory? Fireclay Magnesite Chrome magnesite Dolomite Fireclay Magnesite Chrome magnesite Dolomite ANSWER DOWNLOAD EXAMIANS APP
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