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 With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases Increases Remains unchanged Decreases linearly Decreases Increases Remains unchanged Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature All of these Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature All of these Depends on the nature of slag & refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Firebrick Aluminous firebrick Sillimanite Semi-silica Firebrick Aluminous firebrick Sillimanite Semi-silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Corundum Thoria Carborundum Beryllia Corundum Thoria Carborundum Beryllia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Cristobalite Tridymite All of these Quartz Cristobalite Tridymite All of these Quartz ANSWER DOWNLOAD EXAMIANS APP
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