- (A) 55
- (B) 70
- (C) 80
- (D) 90
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Latest MCQs
- (A) Firebrick
- (B) Sillimanite
- (C) Semi-silica
- (D) Aluminous firebrick
- (A) Porosity
- (B) RUL
- (C) Specific gravity
- (D) Thermal conductivity
- (A) Kyanite
- (B) Sillimanite
- (C) Diaspore
- (D) Periclase
- (A) Magnesite
- (B) Dolomite
- (C) Fireclay
- (D) Chrome magnesite
- (A) 700
- (B) 1000
- (C) 1600
- (D) 2000
- (A) Cupola
- (B) Gas producer
- (C) Bottom of hot metal mixer
- (D) Roof of open hearth furnace
- (A) Beehive coke ovens
- (B) By-product coke ovens
- (C) Dome of blast furnace stoves
- (D) Roof of open hearth furnace
- (A) High insulating properties
- (B) Low heat capacity
- (C) Low thermal conductivity
- (D) Greater strength
- (A) Fireclay
- (B) Silicon carbide
- (C) Corundum
- (D) Siliceous fireclay
