Refractory Technology Fusion point of a basic refractory material is Not affected by the addition of acid oxides Increased by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides Not affected by the addition of acid oxides Increased by the addition of acid oxides Always less than 1000°C Reduced by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum safe working temperature for fireclay bricks is about __________ °C. 1550 1450 1300 1150 1550 1450 1300 1150 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity is induced in insulating refractories by adding Ammonium chloride/sulphate Calcium phosphate Powdered naphthalene All of these Ammonium chloride/sulphate Calcium phosphate Powdered naphthalene All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the density of silica refractories, its Resistance to slag attack increases Both A & B Spalling resistance reduces Neither A nor B Resistance to slag attack increases Both A & B Spalling resistance reduces Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where Very high temperatures are involved Presence of iron or silica is harmful All of these Highly reducing conditions are involved Very high temperatures are involved Presence of iron or silica is harmful All of these Highly reducing conditions are involved ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is an acidic refractory? Dolomite Fireclay Chrome magnesite Magnesite Dolomite Fireclay Chrome magnesite Magnesite ANSWER DOWNLOAD EXAMIANS APP
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