Refractory Technology Graphite or carbon refractories Are not resistant to corrosion by slag Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a neutral refractory? Magnesite chrome Magnesia Graphite Silica Magnesite chrome Magnesia Graphite Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one expands on heating? Both A & B Fireclay bricks Silica bricks Neither A nor B Both A & B Fireclay bricks Silica bricks Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increasing alumina content, the fusion point of high alumina refractories Increases May increase or decrease ; depends on its alumina content Remains constant Decreases Increases May increase or decrease ; depends on its alumina content Remains constant Decreases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. Permanent linear change RUL Resistance to CO attack Resistance to slag penetration Permanent linear change RUL Resistance to CO attack Resistance to slag penetration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an alumino-silicate refractory? Tar dolomite bricks Fireclay bricks Mullite bricks High alumina bricks Tar dolomite bricks Fireclay bricks Mullite bricks High alumina bricks ANSWER DOWNLOAD EXAMIANS APP
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