Refractory Technology Which is the stable form of silica upto 1470°C ? Quartz Cristobalite Tridymite None of these Quartz Cristobalite Tridymite None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the Increased thermal conductivity of brick None of these Oxidising condition in the furnace Decreased viscosity of slag Increased thermal conductivity of brick None of these Oxidising condition in the furnace Decreased viscosity of slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories are exclusively used in the Walls of coke oven Regenerators of coke oven Side wall of soaking pits Hearth of blast furnace Walls of coke oven Regenerators of coke oven Side wall of soaking pits Hearth of blast furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Test piece for determination of RUL of a refractory is heated in a/an Reducing atmosphere Neutral atmosphere Oxidising atmosphere Electric furnace Reducing atmosphere Neutral atmosphere Oxidising atmosphere Electric furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractory blocks Are used in the hearth of blast furnace Are wetted by molten iron All of these Are acidic in nature Are used in the hearth of blast furnace Are wetted by molten iron All of these Are acidic in nature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Either A or B Neither A nor B Neutral Oxidising Either A or B Neither A nor B Neutral Oxidising ANSWER DOWNLOAD EXAMIANS APP
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