Refractory Technology Quartz is Transformed to crystoballite on heating above 1470°C All of these Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C Transformed to crystoballite on heating above 1470°C All of these Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory castables are used for Producing monolithic linings All of these Minimising the number of joints in the structure Patch work Producing monolithic linings All of these Minimising the number of joints in the structure Patch work ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silliminite (Al2O₃.SiO₂) refractory, which is a neutral refractory, is not used in Crucibles Gas retorts Glass melting furnace Pottery furnace Crucibles Gas retorts Glass melting furnace Pottery furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ramming masses are used for Obtaining monolithic working faces Both A & B Repairing construction of various furnace parts Neither A nor B Obtaining monolithic working faces Both A & B Repairing construction of various furnace parts Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exihibit wetting characteristics ANSWER DOWNLOAD EXAMIANS APP
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