Refractory Technology 'Super refractories' are made from pure Oxides Borides Nitrides Carbides Oxides Borides Nitrides Carbides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of grog in fireclay brick during its manufacture is advantageous, because it results in All of these Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production Less shrinkage in heating, decreased apparent porosity & increased specific gravity High strength & thermal spalling resistance All of these Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production Less shrinkage in heating, decreased apparent porosity & increased specific gravity High strength & thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks with lower permeability is produced by using Higher firing temperature All of these Higher moulding pressure Finer grog size Higher firing temperature All of these Higher moulding pressure Finer grog size ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Zirconia Thoria Alumina Magnesia Zirconia Thoria Alumina Magnesia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Conversion of silica mineral to cristobalite is accompanied by reduction in its Neither A nor B Both A & B Specific gravity Volume Neither A nor B Both A & B Specific gravity Volume ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Slide gate in teeming laddies Continuous casting systems Neither A nor B Both A & B Slide gate in teeming laddies Continuous casting systems Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP