Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 5-7 14-20 7-12 2-3 5-7 14-20 7-12 2-3 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Silicon nitride Zirconium sulphate Crystalline magnesia Silicon carbide Silicon nitride Zirconium sulphate Crystalline magnesia Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of fireclay refractories is __________ percent. 35-50 43961 25-35 44129 35-50 43961 25-35 44129 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? High thermal conductivity Both A & B Low porosity Neither A nor B High thermal conductivity Both A & B Low porosity Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dolomite bricks have good resistance to attack by Molten steel Iron oxide Lime slag None of these Molten steel Iron oxide Lime slag None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories have low resistance to Both B and C Disintegration on sudden change of temperature Attack by basic slag Abrasion Both B and C Disintegration on sudden change of temperature Attack by basic slag Abrasion ANSWER DOWNLOAD EXAMIANS APP
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