A. Superduty fireclay
B. High alumina
C. Silica
D. Carborundum
A. Superduty fireclay
B. Silica
C. Chromite
D. None of these
A. Furnaces allowed to cool frequently
B. Flues
C. Chimney linings
D. All A., B. and C.
A. Has high fusion temperature (> 3000°C) but poor resistance to thermal shock
B. Has high resistance to basic slags
C. Which is expensive & radioactive, is used in crucibles for melting high purity metals
D. All A., B. and C.
A. Tar bonded dolomite bricks
B. Fireclay bricks
C. Mullite bricks
D. Magnesite bricks
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease
A. 30
B. 50
C. 70
D. 90