Refractory Technology Magnesite chrome refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion Have better spalling resistance than chrome magnesite refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion Have better spalling resistance than chrome magnesite refractories ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of Segar cones Insulating bricks Muffles for muffle furnaces Crucibles used for melting of high purity metals Segar cones Insulating bricks Muffles for muffle furnaces Crucibles used for melting of high purity metals ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The largest consumer of refractories is the __________ industry. Metallurgical Power Cement Fertiliser Metallurgical Power Cement Fertiliser ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Quartz All of these Tridymite Cristobalite Quartz All of these Tridymite Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory Castables Mortars Cements None of these Castables Mortars Cements None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Softening Resistancce to compressive loads Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Softening Resistancce to compressive loads ANSWER DOWNLOAD EXAMIANS APP
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