Refractory Technology Quartz is Stable form of silica upto 870°C Converted to tridymite on firing between 870 to 1470°C All of these Transformed to crystoballite on heating above 1470°C Stable form of silica upto 870°C Converted to tridymite on firing between 870 to 1470°C All of these Transformed to crystoballite on heating above 1470°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome bricks are used in the Reheating furnaces Roof lining of basic open hearth & other basic furnaces Soaking pits All of these Reheating furnaces Roof lining of basic open hearth & other basic furnaces Soaking pits All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Outer combustion chamber of blast furnace stove is lined with __________ bricks. Zirconia Chrome magnesite Silica Fireclay Zirconia Chrome magnesite Silica Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Resistancce to compressive loads Softening Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Resistancce to compressive loads Softening ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is MgCO₃ Amorphous magnesite ZrSO₄ Crystalline form of MgO MgCO₃ Amorphous magnesite ZrSO₄ Crystalline form of MgO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum apparent porosity of magnesite bricks is about __________ percent. 58 8 44 24 58 8 44 24 ANSWER DOWNLOAD EXAMIANS APP
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