Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? None of these Tridymite Cristobalite Quartz None of these Tridymite Cristobalite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot metal runner in blast furnace are lined with __________ bricks. Magnesite Carborundum Silica Fireclay Magnesite Carborundum Silica Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Does not affect Either A or B; depends on its quantity Lowers Increases Does not affect Either A or B; depends on its quantity Lowers Increases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 10 500 100 1000 10 500 100 1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Fusion under load CO attack Slag attack Thermal spalling Fusion under load CO attack Slag attack Thermal spalling ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractories are not used in Lining high temperature ceramic kilns Making sheaths for thermocouple High frequency induction furnaces in the form of inductors Furnaces subjected to fluctuating temperature Lining high temperature ceramic kilns Making sheaths for thermocouple High frequency induction furnaces in the form of inductors Furnaces subjected to fluctuating temperature ANSWER DOWNLOAD EXAMIANS APP
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