Refractory Technology Porosity is induced in insulating refractories by adding Powdered naphthalene All of these Calcium phosphate Ammonium chloride/sulphate Powdered naphthalene All of these Calcium phosphate Ammonium chloride/sulphate ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Reduced by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Increased by the addition of acid oxides Reduced by the addition of acid oxides Not affected by the addition of acid oxides Always less than 1000°C Increased by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks with lower permeability is produced by using Finer grog size All of these Higher firing temperature Higher moulding pressure Finer grog size All of these Higher firing temperature Higher moulding pressure ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is Crystalline form of MgO MgCO₃ ZrSO₄ Amorphous magnesite Crystalline form of MgO MgCO₃ ZrSO₄ Amorphous magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is not a single oxiderefractory. Zirconia None of these Magnesia Silicon carbide Zirconia None of these Magnesia Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The maximum linear expansion of silica bricks during firing is about __________ percent. 2 3.5 1 0.5 2 3.5 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
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