Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Carborundum Corundum Beryllia Thoria Carborundum Corundum Beryllia Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Quartz is Converted to tridymite on firing between 870 to 1470°C Transformed to crystoballite on heating above 1470°C Stable form of silica upto 870°C All of these Converted to tridymite on firing between 870 to 1470°C Transformed to crystoballite on heating above 1470°C Stable form of silica upto 870°C All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following does not occur during firing/burning of refractories? Removal of water of hydration Vitrification Development of stable mineral form Decrease in crushing strength Removal of water of hydration Vitrification Development of stable mineral form Decrease in crushing strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. > 1730 1630-1670 1520-1630 > 2000 > 1730 1630-1670 1520-1630 > 2000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Vacuum steel degassing units are lined with High alumina bricks Silica bricks Low duty firebricks Graphite blocks High alumina bricks Silica bricks Low duty firebricks Graphite blocks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves? High strength and density All of these High resistance to spalling High refractoriness High strength and density All of these High resistance to spalling High refractoriness ANSWER DOWNLOAD EXAMIANS APP
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