Refractory Technology Cold crushing strength of ordinary fireclay brick is about 950 kg/cm² . On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm² . 450 65 250 150 450 65 250 150 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are Having high strength & resistance to high temperature Composite material containing both ceramic & metallic constituents All of these Used in space vehicles, missiles & nuclear energy plants Having high strength & resistance to high temperature Composite material containing both ceramic & metallic constituents All of these Used in space vehicles, missiles & nuclear energy plants ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica below 870°C ? Tridymite Cristobalite Quartz None of these Tridymite Cristobalite Quartz None of these 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 High resistance to spalling High refractoriness All of these High strength and density High resistance to spalling High refractoriness All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Does not affect Increases Lowers Either A or B; depends on its quantity Does not affect Increases Lowers Either A or B; depends on its quantity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an acidic refractory? Fireclay High alumina refractory Carbon black Silica Fireclay High alumina refractory Carbon black Silica ANSWER DOWNLOAD EXAMIANS APP
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