Refractory Technology Which is the stable form of silica upto 1470°C ? Quartz None of these Cristobalite Tridymite Quartz None of these Cristobalite Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Tar dolomite bricks are used in the Basic Bessemer converter Electric furnaces Basic open hearth furnace All of these Basic Bessemer converter Electric furnaces Basic open hearth furnace All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively. 50 and 50 20 and 80 60 and 40 80 and 20 50 and 50 20 and 80 60 and 40 80 and 20 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? Quartz Tridymite Cristobalite None of these Quartz Tridymite Cristobalite None of these 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 Muffles for muffle furnaces Crucibles used for melting of high purity metals Insulating bricks Segar cones Muffles for muffle furnaces Crucibles used for melting of high purity metals Insulating bricks Segar cones ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? Low porosity Neither A nor B Both A & B High thermal conductivity Low porosity Neither A nor B Both A & B High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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