Refractory Technology Which is the stable form of silica upto 1470°C ? Tridymite None of these Cristobalite Quartz Tridymite None of these Cristobalite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Insulating refractories should have Low thermal conductivity Both A & B Neither A nor B High porosity Low thermal conductivity Both A & B Neither A nor B High porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Lowduty fireclay Silica Silicon carbide Chrome or magnesite Lowduty fireclay Silica Silicon carbide Chrome or magnesite ANSWER DOWNLOAD EXAMIANS APP
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 Silliminite (Al2O₃.SiO₂) refractory, which is a neutral refractory, is not used in Crucibles Glass melting furnace Pottery furnace Gas retorts Crucibles Glass melting furnace Pottery furnace Gas retorts ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Thoria Corundum Carborundum Beryllia Thoria Corundum Carborundum Beryllia ANSWER DOWNLOAD EXAMIANS APP
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