Refractory Technology Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of Segar cones Muffles for muffle furnaces Crucibles used for melting of high purity metals Insulating bricks Segar cones Muffles for muffle furnaces Crucibles used for melting of high purity metals Insulating bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Semi-silica bricks compared to silica bricks have Both A & B Better spalling resistance Neither A nor B Less fusion point Both A & B Better spalling resistance Neither A nor B Less fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Vacuum steel degassing units are lined with High alumina bricks Silica bricks Low duty firebricks Graphite blocks High alumina bricks Silica bricks Low duty firebricks Graphite blocks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite is not used in the Wear out lining of steel melting furnaces Inner lining of L.D. converter Aluminium melting furnaces All of these Wear out lining of steel melting furnaces Inner lining of L.D. converter Aluminium melting furnaces All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Sillimanite Aluminous firebrick Firebrick Magnesite Sillimanite Aluminous firebrick Firebrick Magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. Silica High alumina Superduty fireclay Carborundum Silica High alumina Superduty fireclay Carborundum ANSWER DOWNLOAD EXAMIANS APP
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