- (A) Does not react with basic slags
- (B) Is produced from baddeleyite
- (C) Cannot be used as an insulator
- (D) Has poor electrical conductivity at high temperature
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- (A) Thermal insulation
- (B) Transformers
- (C) Magnetic switches
- (D) Television sets
- (A) Dehydrate the dried refractory
- (B) Develop stable mineral forms in them
- (C) Form ceramic bonds necessary for development of high crushing strength in the finished product
- (D) All
- (A) crack when subjected to sudden change of temperature
- (B) Cannot be used in the dome of hot blast stoves
- (C) Have lower thermal conductivity than fireclay bricks
- (D) All
- (A) Chrome magnesite
- (B) Magnesite
- (C) Dolomite
- (D) Silicon carbide
- (A) Firebrick
- (B) Sillimanite
- (C) Magnesite
- (D) Aluminous firebrick
- (A) Chemical composition
- (B) Physical structure
- (C) Presence of impurities like iron & alkali
- (D) All
- (A) Crystalline form of MgO
- (B) MgCO3
- (C) ZrSO4
- (D) Amorphous magnesite
- (A) Aluminium phosphate
- (B) Water
- (C) Lime
- (D) Plaster of Paris
- (A) Roof lining of basic open hearth & other basic furnaces
- (B) Reheating furnaces
- (C) Soaking pits
- (D) All
