Related Questions

K produces 100 parts twice as fast as G does. G produces 100 parts in 40 minutes. If each produces parts at a constant rate, how many parts will K produces in 6 minutes.
A 30
B 25
C 20
D 15
Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent.
A 20
B 40
C 65
D 80
Calcination of limestone is not done in a __________ kiln for producing lime.
A Vertical shaft
B Rotary
C Fluidised bed
D Fixed bed
Calcination of limestone to produce lime is done in a __________ kiln.
A Tunnel
B Rotary
C Vertical shaft
D Both B and C
Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone.
A Preheating
B Cooling
C Burning
D All of the above
If the iron ore contains clay as an impurity, the flux added during calcination, is
A Clay
B Lime stone
C Argillaceous iron ore
D All the above
Calcination of iron ores is done
A To remove moisture
B To remove carbonic acid
C By roasting in heaps
D All the above
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
A 500°C
B 750°C
C 1000°C
D 1500°C
Which of the following is used for calcination of limestone and dolomite in industrial practice?
A Fluidised bed reactor
B Moving bed reactor
C Fixed bed reactor
D None of these
Gypsum consists of ---------.
A H2S andCO2
B Lime andH2O
C CaSO4 and H2O
D CO2 and calcium

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