- (A) Heat transfer from a hot body to cold body by the emission of heat waves is called radiation
- (B) Filmwise condensation takes place on non-wettable surfaces
- (C) The boiling point of a solution is affected by liquid head as well as boiling point elevation
- (D) None of these
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- (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
- (A) Beryllia
- (B) Carborundum
- (C) Corundum
- (D) Thoria
- (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
- (A) Increases
- (B) Decreases
- (C) Remain same
- (D) May increase or decrease
- (A) 1520-1630
- (B) 1630-1670
- (C) > 1730
- (D) > 2000
- (A) Spalling resistance
- (B) Refractoriness
- (C) Refractoriness under load (RUL)
- (D) None of these
- (A) It is used for high viscosity liquor having large rate of scaling
- (B) The tube bundle is suspended on bracket
- (C) There is no central downtake
- (D) Downtake is formed by the annular space between the bundle and the shell
