Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Magnesia Zirconia Alumina Thoria Magnesia Zirconia Alumina Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which brick undergoes maximum shrinkage on drying? Tar bonded dolomite bricks Magnesite bricks Fireclay bricks Chromite bricks Tar bonded dolomite bricks Magnesite bricks Fireclay bricks Chromite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a high alumina refractory? Bauxite Dolomite Corrundum Mullite Bauxite Dolomite Corrundum Mullite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Quartz is All of these Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C Transformed to crystoballite on heating above 1470°C All of these Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C Transformed to crystoballite on heating above 1470°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pyrometric cone equivalent (PCE) of a refractory is the measure of its Resistance to carbon monoxide attack Spalling resistance Fusion point Resistance to slag penetration Resistance to carbon monoxide attack Spalling resistance Fusion point Resistance to slag penetration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? Neither A nor B Both A & B Low porosity High thermal conductivity Neither A nor B Both A & B Low porosity High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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