Refractory Technology Spalling resistance of a refractory can not be increased by Decreasing its thermal co-efficient of expansion Increasing its porosity Using a coarser grog during its manufacture Making it denser Decreasing its thermal co-efficient of expansion Increasing its porosity Using a coarser grog during its manufacture Making it denser ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silicon carbide refractories are used in the Zinc smelting furnace Muffle furnace All of these Ceramic recuperators Zinc smelting furnace Muffle furnace All of these Ceramic recuperators ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology To resist spalling tendency, a refractory should have Low thermal co-efficient of expansion All of these Greater diffusivity Low specific heat Low thermal co-efficient of expansion All of these Greater diffusivity Low specific heat ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a natural insulating material? Diatomaceous earth/kieselgur None of these Asbestos Vermiculite Diatomaceous earth/kieselgur None of these Asbestos Vermiculite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is MgCO₃ ZrSO₄ Crystalline form of MgO Amorphous magnesite MgCO₃ ZrSO₄ Crystalline form of MgO Amorphous magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hollow refractory bricks are made by Hand moulding Slip casting Extrusion Pressing/machine moulding Hand moulding Slip casting Extrusion Pressing/machine moulding ANSWER DOWNLOAD EXAMIANS APP
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