- (A) Depends on the nature of slag & refractory
- (B) Decreases at higher temperature
- (C) Decreases, if defective joints & cracks exist in the refractory
- (D) All
Chemical Engineering Mcqs
- (A) Fireclay bricks
- (B) Mullite bricks
- (C) Tar dolomite bricks
- (D) High alumina bricks
- (A) Specific gravity
- (B) Fusion point
- (C) RUL
- (D) None of these
- (A) Tar bonded dolomite bricks
- (B) Fireclay bricks
- (C) Mullite bricks
- (D) Magnesite bricks
- (A) Rotary kilns
- (B) Tunnel kilns
- (C) Sun
- (D) None of these
- (A) Silicon carbide
- (B) Alumina
- (C) Zirconia
- (D) Graphite
- (A) Fusion point
- (B) Spalling resistance
- (C) Slag penetration resistance
- (D) Refractoriness under load (RUL)
- (A) 30
- (B) 50
- (C) 70
- (D) 90
- (A) 5
- (B) 20
- (C) 40
- (D) 55
- (A) Stable form of silica upto 870°C
- (B) Converted to Tridymite on firing between 870 to 1470°C
- (C) Transformed to Cristobalite on heating above 1470°C
- (D) All
