Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. 1520-1630 1630-1670 > 2000 > 1730 1520-1630 1630-1670 > 2000 > 1730 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an alumino-silicate refractory? High alumina bricks Tar dolomite bricks Mullite bricks Fireclay bricks High alumina bricks Tar dolomite bricks Mullite bricks Fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 50 70 90 30 50 70 90 30 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ °C. 70 270 770 570 70 270 770 570 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica upto 1470°C ? Cristobalite None of these Tridymite Quartz Cristobalite None of these Tridymite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks with lower permeability is produced by using All of these Higher moulding pressure Higher firing temperature Finer grog size All of these Higher moulding pressure Higher firing temperature Finer grog size ANSWER DOWNLOAD EXAMIANS APP
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