Refractory Technology Spalling of a refractory means its 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 Fracture due to uneven expansion at high temperature Softening ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal diffusivity of a refractory brick is high, when its __________ is high. Specific heat None of these Density Thermal conductivity Specific heat None of these Density Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An ideal refractory should have high Shrinkage ability Spalling rate Fusion point None of these Shrinkage ability Spalling rate Fusion point None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Tar bonded dolomite bricks Are used in outer lining of L.D. converters All of these Have poorer hydration resistance than pitch bonded bricks Are stored under controlled temperature & humidity to avoid hydration Are used in outer lining of L.D. converters All of these Have poorer hydration resistance than pitch bonded bricks Are stored under controlled temperature & humidity to avoid hydration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory castables are used for Minimising the number of joints in the structure All of these Producing monolithic linings Patch work Minimising the number of joints in the structure All of these Producing monolithic linings Patch work ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Conversion of silica mineral to cristobalite is accompanied by reduction in its Volume Both A & B Neither A nor B Specific gravity Volume Both A & B Neither A nor B Specific gravity ANSWER DOWNLOAD EXAMIANS APP
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