Refractory Technology To resist spalling tendency, a refractory should have Greater diffusivity Low specific heat All of these Low thermal co-efficient of expansion Greater diffusivity Low specific heat All of these Low thermal co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Very low alumina Silica Fireclay Dolomite Very low alumina Silica Fireclay Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the Decreased viscosity of slag None of these Increased thermal conductivity of brick Oxidising condition in the furnace Decreased viscosity of slag None of these Increased thermal conductivity of brick Oxidising condition in the furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Mullite is chemically represented by 2Al2O₃ . 3SiO₂ Al2O₃ . SiO₂ Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ 2Al2O₃ . 3SiO₂ Al2O₃ . SiO₂ Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Tridymite Cristobalite Quartz All of these Tridymite Cristobalite Quartz All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Silicon carbide Lowduty fireclay Silica Chrome or magnesite Silicon carbide Lowduty fireclay Silica Chrome or magnesite ANSWER DOWNLOAD EXAMIANS APP
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