Refractory Technology Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of 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 Segar cones ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are Composite material containing both ceramic & metallic constituents Used in space vehicles, missiles & nuclear energy plants Having high strength & resistance to high temperature All of these Composite material containing both ceramic & metallic constituents Used in space vehicles, missiles & nuclear energy plants Having high strength & resistance to high temperature All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 95 80 60 45 95 80 60 45 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot metal runner in blast furnace are lined with __________ bricks. Silica Magnesite Fireclay Carborundum Silica Magnesite Fireclay Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic electric furnace is made of __________ bricks. Silica None of these Superduty fireclay Chromite Silica None of these Superduty fireclay Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica upto 1470°C ? Cristobalite None of these Tridymite Quartz Cristobalite None of these Tridymite Quartz ANSWER DOWNLOAD EXAMIANS APP
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