- (A) 10
- (B) 15
- (C) 20
- (D) 30
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- (A) Exhibit wetting characteristics
- (B) Should be used in neutral or reducing atmosphere
- (C) Exhibit high shrinkage on thermal treatment
- (D) Are not resistant to corrosion by slag
- (A) Segar cones
- (B) Orton cones
- (C) Pressure vessels
- (D) Ovens & retorts
- (A) Side walls of soaking pits and arc furnaces
- (B) Copper melting furnaces & converters
- (C) Burner block of glass tanks
- (D) All
- (A) Silica
- (B) Fireclay
- (C) Dolomite
- (D) Magnesite
- (A) Silica bricks
- (B) Fireclay bricks
- (C) High alumina bricks
- (D) Tar dolomite bricks
- (A) Quartz
- (B) Cristobalite
- (C) Tridymite
- (D) None of these
- (A) 1800
- (B) 2200
- (C) 2400
- (D) 2700
- (A) Hearth of blast furnace
- (B) Walls of coke oven
- (C) Regenerators of coke oven
- (D) Side wall of soaking pits
- (A) Refractoriness (< 1700°C)
- (B) Thermal conductivity
- (C) Resistance to thermal shock
- (D) None of these
