Refractory Technology Quartz is Transformed to crystoballite on heating above 1470°C All of these Stable form of silica upto 870°C Converted to tridymite on firing between 870 to 1470°C Transformed to crystoballite on heating above 1470°C All of these Stable form of silica upto 870°C Converted to tridymite on firing between 870 to 1470°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves? All of these High resistance to spalling High strength and density High refractoriness All of these High resistance to spalling High strength and density High refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a basic refractory? Silicon carbide Chrome magnesite Magnesite Dolomite Silicon carbide Chrome magnesite Magnesite Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An indication of degree of firing in silica brick is its Fusion point RUL None of these Specific gravity Fusion point RUL None of these Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 30 20 15 10 30 20 15 10 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? Quartz Cristobalite Tridymite None of these Quartz Cristobalite Tridymite None of these ANSWER DOWNLOAD EXAMIANS APP
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