Chemical Engineering MCQs

A. Increase in heating capacity/m2 of floor space
B. Elimination of cold spot at the bottom of the charge
C. Reduction in the temperature of furnace gases
D. Protection of the periphery of the charge from excessive radiation

A. Change in volume during a change of temperature
B. Difference in density between hot and cold gases
C. Furnace pressure in conjunction with draft in flues
D. All a., b. and c.

A. Size of the furnace
B. Gas velocity in furnace
C. Ratio of wall surface to surface of stock
D. None of these

A. Blast furnace stoves
B. Blast furnace
C. Coke oven heating chamber
D. Rotary kilns

A. Increase in calorific value of the fuel
B. Increase in flame temperature
C. Reduction in scale losses
D. Saving in fuel consumption

A. Economiser
B. Regenerator
C. Ceramic recuperator
D. Waste heat boiler

A. Economiser
B. Steam superheater
C. Air preheater
D. All a., b. and c.

A. Higher calorific value
B. Better combustion
C. Smokeless burning
D. Less erosion on furnace wall

A. Hood annealing furnace
B. Muffle furnace
C. Both a. and b.
D. Neither a. nor b.

A. Transportation of coal
B. Drying of coal
C. Combustion of coal by supplying it around the burner
D. Preheating the primary air