Refractory Technology Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively. 80 and 20 60 and 40 20 and 80 50 and 50 80 and 20 60 and 40 20 and 80 50 and 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica upto 1470°C ? Cristobalite None of these Tridymite Quartz Cristobalite None of these Tridymite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories have low resistance to Abrasion Disintegration on sudden change of temperature Attack by basic slag Both B and C Abrasion Disintegration on sudden change of temperature Attack by basic slag Both B and C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite. Resistance to slag Crushing strength Refractoriness Spalling resistance Resistance to slag Crushing strength Refractoriness Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? Quartz None of these Tridymite Cristobalite Quartz None of these Tridymite Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Basic bricks are not made of Foresterite Fireclay Chromite Magnesite Foresterite Fireclay Chromite Magnesite ANSWER DOWNLOAD EXAMIANS APP
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