Refractory Technology Which one contains maximum percentage of Al2O₃ ? Firebrick Sillimanite Aluminous firebrick Magnesite Firebrick Sillimanite Aluminous firebrick Magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 90 30 50 70 90 30 50 70 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an acidic refractory? Carbon black High alumina refractory Silica Fireclay Carbon black High alumina refractory Silica Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory Cements Castables Mortars None of these Cements Castables Mortars None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High refractorinness of refractory bricks means, that it has a Low porosity High spalling resistance Low spalling resistance High resistance to fusion Low porosity High spalling resistance Low spalling resistance High resistance to fusion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag ANSWER DOWNLOAD EXAMIANS APP
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