Refractory Technology Roof of a basic electric furnace is made of __________ bricks. Chromite None of these Silica Superduty fireclay Chromite None of these Silica Superduty fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories Do not burn/oxidise, when exposed to air on heating Are not attacked by slags, as they are not wetted by melts Do not resist temperature fluctuations Have extremely low thermal & electrical conductivities Do not burn/oxidise, when exposed to air on heating Are not attacked by slags, as they are not wetted by melts Do not resist temperature fluctuations Have extremely low thermal & electrical conductivities ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is an acidic refractory? Chrome magnesite Magnesite Fireclay Dolomite Chrome magnesite Magnesite Fireclay Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is not a single oxiderefractory. Silicon carbide None of these Magnesia Zirconia Silicon carbide None of these Magnesia Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Tridymite All of these Quartz Cristobalite Tridymite All of these Quartz Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Neither A nor B Washing action of metal Corrosion by layer of slag Both A & B Neither A nor B Washing action of metal Corrosion by layer of slag Both A & B ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS