A. Superduty fireclay
B. Silica
C. Chromite
D. None of these
A. Silicon carbide
B. Alumina
C. Zirconia
D. Graphite
A. Fireclay
B. Silica
C. Magnesite
D. Corundum
A. Are not resistant to the action of basic slags
B. Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming
fusible aluminates silicates etc
C. Shrink during firing
D. All A., B. and C.
A. Fireclay
B. Carborundum
C. Graphite
D. Chromite
A. 3Al2O3.2SiO2
B. Al2O3
C. ZrSO4
D. ThO2
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