Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 2570 1715 1350 2800 2570 1715 1350 2800 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is ZrSO₄ Amorphous magnesite MgCO₃ Crystalline form of MgO ZrSO₄ Amorphous magnesite MgCO₃ Crystalline form of MgO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? None of these Tridymite Quartz Cristobalite None of these Tridymite Quartz Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology To resist spalling tendency, a refractory should have Low specific heat All of these Low thermal co-efficient of expansion Greater diffusivity Low specific heat All of these Low thermal co-efficient of expansion Greater diffusivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pyrometric cone equivalent (PCE) of a refractory is the measure of its Resistance to slag penetration Fusion point Spalling resistance Resistance to carbon monoxide attack Resistance to slag penetration Fusion point Spalling resistance Resistance to carbon monoxide attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Super refractories' are made from pure Oxides Carbides Borides Nitrides Oxides Carbides Borides Nitrides ANSWER DOWNLOAD EXAMIANS APP
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