Refractory Technology Which form of silica has the highest specific gravity? Cristobalite Quartz All of these Tridymite Cristobalite Quartz All of these Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Thoria Alumina Magnesia Zirconia Thoria Alumina Magnesia Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic open hearth furnace is lined with __________ bricks. Dolomite Silica Fireclay Magnesite Dolomite Silica Fireclay Magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dolomite bricks have good resistance to attack by None of these Molten steel Lime slag Iron oxide None of these Molten steel Lime slag Iron oxide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractories are used in the Glass melting furnaces Electric arc furnace roof Dome of blast furnace stoves All of these Glass melting furnaces Electric arc furnace roof Dome of blast furnace stoves All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Very high cost Low co-efficient of thermal expansion Tendency to expand unduly high during firing Poor thermal spalling resistance Very high cost Low co-efficient of thermal expansion Tendency to expand unduly high during firing Poor thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
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