- (A) MgAl2O4
- (B) MgAl2O3
- (C) MgSO4
- (D) MgAl2O3.2H2O
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- (A) 35-40
- (B) 55-60
- (C) 80-85
- (D) > 94
- (A) Al2O3
- (B) CaO
- (C) SiO2
- (D) All
- (A) Preheating
- (B) Cooling
- (C) Burning
- (D) All the above
- (A) High thermal conductivity
- (B) Low porosity
- (C) Non-wetting characteristics
- (D) High density
- (A) 80 and 20
- (B) 20 and 80
- (C) 50 and 50
- (D) 60 and 40
- (A) Fireclay
- (B) Direct bonded basic
- (C) Silica
- (D) Magnesite
- (A) Silicon carbide
- (B) Magnesite
- (C) Chromite
- (D) Graphite
- (A) Tridymite
- (B) Cristobalite
- (C) Quartz
- (D) None of these
- (A) Decreases linearly
- (B) Remains unchanged
- (C) Increases
- (D) Decreases
