Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. > 1730 1630-1670 > 2000 1520-1630 > 1730 1630-1670 > 2000 1520-1630 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except Thermal conductivity Fusion point Cost Electrical conductivity Thermal conductivity Fusion point Cost Electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica below 870°C ? Tridymite None of these Cristobalite Quartz Tridymite None of these Cristobalite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An ideal refractory should have high None of these Spalling rate Shrinkage ability Fusion point None of these Spalling rate Shrinkage ability Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks should not be used in oxidising atmosphere. Fireclay Carbon Silica Tar dolomite Fireclay Carbon Silica Tar dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Colour of fireclay bricks is Yellow Black None of these Light buff to reddish buff Yellow Black None of these Light buff to reddish buff ANSWER DOWNLOAD EXAMIANS APP
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