- (A) Feedwater
- (B) Combustion air
- (C) Pulverised coal
- (D) Furnace oil
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- (A) Ammonia
- (B) Fine dolomite
- (C) Alkaline powders
- (D) None of these
- (A) Furnace oil with air
- (B) Furnace oil with oxygen
- (C) Blast furnace gas with air
- (D) Blast furnace gas with oxygen
- (A) Stoichiometric combustion air
- (B) Non-preheated combustion air
- (C) Combustion air not enriched with oxygen
- (D) Recuperators
- (A) A ceramic material which becomes fluid upon heating and can be moulded in liquid/viscous state is termed s glass
- (B) Ceramic materials do not undergo vitrification on heating
- (C) Ceramic materials are brittle in nature
- (D) Non-oxide ceramic materials generally act as a semi-conductor
- (A) Fluxing material like lime is added in clay to reduce the vitrification temperature
- (B) Main constituents of clay are alumina and silica
- (C) Addition of sand in ceramic materials makes it non-plastic, increases its fusion point and reduces its shrinkage on burning
- (D) Vitrification of fireclay material is done to increase its porosity
- (A) Soaking pit
- (B) Reheating furnace
- (C) Open hearth furnace
- (D) Cupola
- (A) Ammonium phosphate
- (B) Superphosphate
- (C) Triple superphosphate
- (D) None of these
- (A) Low pressure
- (B) High pressure
- (C) Very high temperature
- (D) Atmospheric pressure; as the pressure has no effect on conversion
- (A) Oxidation of ammonia
- (B) CaNO3 + H2SO4 reaction
- (C) Passing air through high voltage electric arc
- (D) None of these
