Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? Quartz Tridymite None of these Cristobalite Quartz Tridymite None of these Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Graphite Carborundum Fireclay Chromite Graphite Carborundum Fireclay Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its Non-wetting characteristic High thermal conductivity None of these High crushing strength Non-wetting characteristic High thermal conductivity None of these High crushing strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Colour of fireclay bricks is None of these Light buff to reddish buff Yellow Black None of these Light buff to reddish buff Yellow Black ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called Refractoriness under load (RUL) None of these Spalling resistance Refractoriness Refractoriness under load (RUL) None of these Spalling resistance Refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of fireclay refractories is __________ percent. 43961 25-35 44129 35-50 43961 25-35 44129 35-50 ANSWER DOWNLOAD EXAMIANS APP
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