Refractory Technology Semi-silica bricks compared to silica bricks have Both A & B Neither A nor B Better spalling resistance Less fusion point Both A & B Neither A nor B Better spalling resistance Less fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase refractory contains mainly CaO Al2O₃ MgO SiO₂ CaO Al2O₃ MgO SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Quartz is All of these Stable form of silica upto 870°C Transformed to crystoballite on heating above 1470°C Converted to tridymite on firing between 870 to 1470°C All of these Stable form of silica upto 870°C Transformed to crystoballite on heating above 1470°C Converted to tridymite on firing between 870 to 1470°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Very low alumina Fireclay Silica Dolomite Very low alumina Fireclay Silica Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Cooling down Warming up Both A & B Neither A nor B Cooling down Warming up Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica below 870°C ? Cristobalite Quartz Tridymite None of these Cristobalite Quartz Tridymite None of these ANSWER DOWNLOAD EXAMIANS APP
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