Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Does not affect Either A or B; depends on its quantity Increases Lowers Does not affect Either A or B; depends on its quantity Increases Lowers ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks should not be used in oxidising atmosphere. Silica Carbon Fireclay Tar dolomite Silica Carbon Fireclay Tar dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hollow refractory bricks are made by Slip casting Hand moulding Extrusion Pressing/machine moulding Slip casting Hand moulding Extrusion Pressing/machine moulding ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. High alumina Silica Superduty fireclay Carborundum High alumina Silica Superduty fireclay Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? Tridymite None of these Quartz Cristobalite Tridymite None of these Quartz Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog Contains both alumina and silica Is a non-plastic material Iscrushed firebrick All of these Contains both alumina and silica Is a non-plastic material Iscrushed firebrick All of these ANSWER DOWNLOAD EXAMIANS APP
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