Refractory Technology Which of the following is not a neutral refractory? Chromite Magnesite Graphite Silicon carbide Chromite Magnesite Graphite Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Colour of fireclay bricks is Yellow None of these Black Light buff to reddish buff Yellow None of these Black Light buff to reddish buff ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. Silica High alumina Superduty fireclay Carborundum Silica High alumina Superduty fireclay Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica refractories Can not be used in the dome of hot blast stoves Crack when subjected to sudden change of temperature All of these Have lower thermal conductivity than fireclay bricks Can not be used in the dome of hot blast stoves Crack when subjected to sudden change of temperature All of these Have lower thermal conductivity than fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Both A & B Cooling down Warming up Neither A nor B Both A & B Cooling down Warming up Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
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