A. Silicon carbide
B. Silicon nitride
C. Crystalline magnesia
D. Zirconium sulphate
A. Refractoriness
B. Melting point
C. Rate at which a fluid will pass through the pores
D. Expansion during heating
A. Quartz
B. Cristobalite
C. Tridymite
D. All have the same specific gravity
A. Increases with decrease in porosity
B. Decreases with decreases in porosity
C. Is independent of its porosity and is maximum for insulating bricks
D. Increases with the amount of air entrapped in pores
A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns
A. Silica
B. Fireclay
C. High alumina refractory
D. Carbon black
A. Graphite
B. Magnesite chrome
C. Silica
D. Magnesia
A. Magnesite
B. Dolomite
C. Fireclay
D. Chrome magnesite
A. 700
B. 1000
C. 1600
D. 2000
A. Cupola
B. Gas producer
C. Bottom of hot metal mixer
D. Roof of open hearth furnace