Refractory Technology Zircon refractories have High RUL (1600°C) and refractoriness (> 2000°C) High spalling resistance Low co-efficient of expansion All of these High RUL (1600°C) and refractoriness (> 2000°C) High spalling resistance Low co-efficient of expansion All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 80 95 60 45 80 95 60 45 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica below 870°C ? Cristobalite Tridymite Quartz None of these Cristobalite Tridymite Quartz None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Alumina Zirconia Magnesia Thoria Alumina Zirconia Magnesia Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is not a single oxiderefractory. Zirconia Silicon carbide Magnesia None of these Zirconia Silicon carbide Magnesia None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following does not occur during firing/burning of refractories? Removal of water of hydration Vitrification Development of stable mineral form Decrease in crushing strength Removal of water of hydration Vitrification Development of stable mineral form Decrease in crushing strength ANSWER DOWNLOAD EXAMIANS APP
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