Refractory Technology Permeability of bricks is a measure of the Expansion during heating Refractoriness Rate at which a fluid will pass through the pores Melting point Expansion during heating Refractoriness Rate at which a fluid will pass through the pores Melting point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the None of these Decreased viscosity of slag Oxidising condition in the furnace Increased thermal conductivity of brick None of these Decreased viscosity of slag Oxidising condition in the furnace Increased thermal conductivity of brick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Conversion of silica mineral to cristobalite is accompanied by reduction in its Volume Neither A nor B Both A & B Specific gravity Volume Neither A nor B Both A & B Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? Low porosity Both A & B Neither A nor B High thermal conductivity Low porosity Both A & B Neither A nor B High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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 Electrical resistor bars are made of Zirconia Silicon carbide Alumina Graphite Zirconia Silicon carbide Alumina Graphite ANSWER DOWNLOAD EXAMIANS APP
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