Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? Quartz None of these Cristobalite Tridymite Quartz None of these Cristobalite Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Oxidising Neutral Either A or B Neither A nor B Oxidising Neutral Either A or B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 20 to 30 60 to 75 45 to 60 5 to 10 20 to 30 60 to 75 45 to 60 5 to 10 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 30 90 70 50 30 90 70 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 14-20 2-3 7-12 5-7 14-20 2-3 7-12 5-7 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS