Refractory Technology Dolomite bricks have good resistance to attack by Molten steel Iron oxide None of these Lime slag Molten steel Iron oxide None of these Lime slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Semi-silica Firebrick Aluminous firebrick Sillimanite Semi-silica Firebrick Aluminous firebrick Sillimanite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Regenerators Muffle furnaces Insulation Coke ovens Regenerators Muffle furnaces Insulation Coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 100-150 50-100 200-400 500-1000 100-150 50-100 200-400 500-1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Quartz is All of these Transformed to crystoballite on heating above 1470°C Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C All of these Transformed to crystoballite on heating above 1470°C Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractories are not used in 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 Lining high temperature ceramic kilns ANSWER DOWNLOAD EXAMIANS APP
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