- (A) Producing monolithic linings
- (B) Patch work
- (C) Minimising the number of joints in the structure
- (D) All
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- (A) Removal of water of hydration
- (B) Vitrification
- (C) Decrease in crushing strength
- (D) Development of stable mineral form
- (A) Reduce its shrinkage on heating
- (B) Impart greater spalling resistance
- (C) Enhance the strength of fired refractories
- (D) All
- (A) Combustion chamber of blast furnace stoves
- (B) Electric furnaces
- (C) Highly chemical resistant equipments
- (D) Blast furnace hearth
- (A) 10
- (B) 100
- (C) 500
- (D) 1000
- (A) Powdered naphthalene
- (B) Ammonium chloride/sulphate
- (C) Calcium phosphate
- (D) All
- (A) Softening temperature
- (B) Spalling resistance
- (C) Electrical conductivity
- (D) Resistance to slag attack
- (A) Increased by the addition of basic oxides
- (B) Reduced by the addition of basic oxides
- (C) Not affected by the addition of basic oxides
- (D) Always more than 2500°C
- (A) Spalling rate
- (B) Fusion point
- (C) Shrinkage ability
- (D) None of these
- (A) Wetting characteristics
- (B) Refractoriness
- (C) Thermal conductivity
- (D) Both
