Conversion of silica mineral to Cristobalite is accompanied by reduction in its ____________________?
A. Volume
B. Specific gravity
C. Both A. & B.
D. Neither A. nor B.
A. Volume
B. Specific gravity
C. Both A. & B.
D. Neither A. nor B.
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. Basic Bessemer converter
B. Basic open hearth furnace
C. Electric furnaces
D. All A., B. and C.
A. Very high temperatures are involved
B. Highly reducing conditions are involved
C. Presence of iron or silica is harmful
D. All A., B. and C.
A. Coke oven walls
B. Beehive coke ovens
C. Dome and upper portion of B.F. stoves
D. Open hearth furnace roof
A. Cooling down
B. Warming up
C. Both A. & B.
D. Neither A. nor B.
A. Tar bonded dolomite bricks
B. Fireclay bricks
C. Magnesite bricks
D. Chromite bricks