Refractory Technology Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm² ) is __________ °C. 1000 >1350 >2000 500 1000 >1350 >2000 500 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage? Fireclay bricks Magnesite bricks Mullite bricks Tar bonded dolomite bricks Fireclay bricks Magnesite bricks Mullite bricks Tar bonded dolomite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. RUL Resistance to CO attack Resistance to slag penetration Permanent linear change RUL Resistance to CO attack Resistance to slag penetration Permanent linear change ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Quartz is 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 Stable form of silica upto 870°C Converted to tridymite on firing between 870 to 1470°C All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 500 1000 10 100 500 1000 10 100 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of Silicon carbide Siliceous fireclay Fireclay Corrundum Silicon carbide Siliceous fireclay Fireclay Corrundum ANSWER DOWNLOAD EXAMIANS APP
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