Refractory Technology Chrome magnesite bricks are Acidic in nature Neutral in nature Made by mixing 30% chromite and 70% periclase Having higher RUL than silica bricks Acidic in nature Neutral in nature Made by mixing 30% chromite and 70% periclase Having higher RUL than silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases linearly Remains unchanged Decreases Increases Decreases linearly Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog Iscrushed firebrick Contains both alumina and silica Is a non-plastic material All of these Iscrushed firebrick Contains both alumina and silica Is a non-plastic material All of these 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
Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. > 2000 1630-1670 > 1730 1520-1630 > 2000 1630-1670 > 1730 1520-1630 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractory blocks Are wetted by molten iron Are used in the hearth of blast furnace Are acidic in nature All of these Are wetted by molten iron Are used in the hearth of blast furnace Are acidic in nature All of these ANSWER DOWNLOAD EXAMIANS APP
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