Refractory Technology Porosity is induced in insulating refractories by adding Calcium phosphate Powdered naphthalene Ammonium chloride/sulphate All of these Calcium phosphate Powdered naphthalene Ammonium chloride/sulphate All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of an acidic refractory material is Not affected by the addition of basic oxides Reduced by the addition of basic oxides Increased by the addition of basic oxides Not affected by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides Increased by the addition of basic oxides Not affected by the addition of basic oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silliminite (Al2O₃.SiO₂) refractory, which is a neutral refractory, is not used in Crucibles Pottery furnace Glass melting furnace Gas retorts Crucibles Pottery furnace Glass melting furnace Gas retorts ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Bauxite calcining rotary kilns are lined with __________ bricks. Fireclay Corundum 85% alumina Carbon Fireclay Corundum 85% alumina Carbon ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are never used for lining the Roof of open hearth furnace Beehive coke ovens Dome of blast furnace stoves By-product coke ovens Roof of open hearth furnace Beehive coke ovens Dome of blast furnace stoves By-product coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are All of these Used in space vehicles, missiles & nuclear energy plants Composite material containing both ceramic & metallic constituents Having high strength & resistance to high temperature All of these Used in space vehicles, missiles & nuclear energy plants Composite material containing both ceramic & metallic constituents Having high strength & resistance to high temperature ANSWER DOWNLOAD EXAMIANS APP
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