A. Soaking pit
B. Blast furnace
C. L.D. converter
D. Coke ovens
A. Green strength
B. Voids
C. Shrinkage
D. Both B. and C.
A. Resistance to slag attack increases
B. Spalling resistance reduces
C. Both A. and B.
D. Neither A. nor B.
A. Very high thermal conductivity
B. High co-efficient of expansion upto this temperature
C. High thermal diffusivity
D. Low refractoriness
A. 5
B. 20
C. 40
D. 55
A. Mainly contains quartz
B. Is not stable at high temperature
C. Transforms to other allotropic forms i.e. Tridymite and Cristobalite involving very high
volume changes
D. All A., B. and C.
A. Carbides
B. Oxides
C. Borides
D. Nitrides