Q.1
Which kind of fluid is included to obtain smooth fluidization?
  • a) Water
  • b) Air
  • c) Oxygen
  • d) Nitrogen
Q.2
Air is introduced in the bed to fluidize the bed in the bubble form, true or false?
  • a) True
  • b) False
Q.3
Which type of distributor provides the best quality for fluidization?
  • a) Single orifice plate
  • b) Multiple orifice plate
  • c) Nozzle plate
  • d) Sintered plate
Q.4
In case of a heavy bed, which type of distributor can withstand its weight?
  • a) Flat
  • b) Convex
  • c) Concave
  • d) Concavo-convex
Q.5
Which type of distributor reduces channelling and slugging to maximum extent?
  • a) Single orifice plate
  • b) Multiple orifice plate
  • c) Nozzle plate
  • d) Sintered plate
Q.6
What is range of orifice diameter in the distributor in FCC?
  • a) 3.8-5.1 cm
  • b) 1.2-3.5 cm
  • c) 5.5-7.9 cm
  • d) None of the mentioned
Q.7
What is the range of nozzle opening in the roasting of sulphide ore?
  • a) 0.4-0.6 cm
  • b) 1.2-1.5 cm
  • c) 3.8-5.1 cm
  • d) None of the mentioned
Q.8
What is the approximate pressure drop across the orifice distributor?
  • a) 10%
  • b) 15%
  • c) 20%
  • d) 5%
Q.9
Which arrangement is fabricated in order to prevent the solids pass through the distributor?
  • a) Orifice
  • b) Nozzle
  • c) Sintered
  • d) All of the mentioned
Q.10
What is the fluidizing velocity range for drying of fine coal with fluidized bed?
  • a) 3.7-4.3 m/s
  • b) 4.3-4.9 m/s
  • c) 4.9-5.5 m/s
  • d) 5.5-6-1 m/s
0 h : 0 m : 1 s