Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? None of these Quartz Cristobalite Tridymite None of these Quartz Cristobalite Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog Is a non-plastic material Iscrushed firebrick Contains both alumina and silica All of these Is a non-plastic material Iscrushed firebrick Contains both alumina and silica All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of zircon to silica refractory brick improves its Neither A nor B Crushing strength Resistance to slag attack Neither A nor B Neither A nor B Crushing strength Resistance to slag attack Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its Low refractoriness High co-efficient of expansion upto this temperature High thermal diffusivity Very high thermal conductivity Low refractoriness High co-efficient of expansion upto this temperature High thermal diffusivity Very high thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. 1630-1670 > 1730 1520-1630 > 2000 1630-1670 > 1730 1520-1630 > 2000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Panel test determines the __________ of refractories. Spalling resistance Refractoriness under load (RUL) Fusion point Slag penetration resistance Spalling resistance Refractoriness under load (RUL) Fusion point Slag penetration resistance ANSWER DOWNLOAD EXAMIANS APP
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