Refractory Technology Maximum apparent porosity of magnesite bricks is about __________ percent. 44 8 24 58 44 8 24 58 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity is induced in insulating refractories by adding All of these Calcium phosphate Ammonium chloride/sulphate Powdered naphthalene All of these Calcium phosphate Ammonium chloride/sulphate Powdered naphthalene ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are never used in the Coke oven walls Zinc roaster Beehive oven Lead blast furnace Coke oven walls Zinc roaster Beehive oven Lead blast furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories have very high Wetting characteristics Both B and C Refractoriness Thermal conductivity Wetting characteristics Both B and C Refractoriness Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? Cristobalite Tridymite Quartz None of these Cristobalite Tridymite Quartz None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its Low refractoriness High thermal diffusivity High co-efficient of expansion upto this temperature Very high thermal conductivity Low refractoriness High thermal diffusivity High co-efficient of expansion upto this temperature Very high thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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