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MCQs

Total Questions : 2215 | Page 217 of 222 pages
Question 2161. For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is__________________?
  1.    2250
  2.    1125
  3.    460
  4.    230
 Discuss Question
Answer: Option D. -> 230
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2162. Traces of liquid tar fog present in coke oven gas is separated using____________________?
  1.    Electrostatic precipitator
  2.    Cyclone separator
  3.    Strainer
  4.    None of these
 Discuss Question
Answer: Option A. -> Electrostatic precipitator
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2163. Which of the following is a batch sedimentation equipment ?
  1.    Dust catcher
  2.    Filter thickener
  3.    Dry cyclone separator
  4.    Rotary sprayer scrubber
 Discuss Question
Answer: Option B. -> Filter thickener
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2164. Filtration rate does not depend upon the________________?
  1.    Pressure drop & area of filtering surface
  2.    Resistance of the cake & the septum
  3.    Properties of the cake & the filtrate
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2165. Shape factor for a cylinder whose length equals its diameter is_________________?
  1.    1.5
  2.    0.5
  3.    1.0
  4.    2.0
 Discuss Question
Answer: Option A. -> 1.5
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2166. Cyclones are used primarily for separating_________________?
  1.    Solids
  2.    Solids from fluids
  3.    Liquids
  4.    Solids from solids
 Discuss Question
Answer: Option B. -> Solids from fluids
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2167. The reduction ratio for fine grinders is_____________?
  1.    5-10
  2.    10-20
  3.    20-40
  4.    As high as 100
 Discuss Question
Answer: Option D. -> As high as 100
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2168. Xanthates are used in the froth floatation process as a/an _______________________?
  1.    Conditioner
  2.    Frother
  3.    Collector
  4.    Activator
 Discuss Question
Answer: Option C. -> Collector
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2169. Filtration should be stopped in a filter press, if the_________________?
  1.    Cake becomes very dense
  2.    Liquor stops flowing out to the discharge
  3.    Filtration pressure rises suddenly
  4.    Both B. & C.
 Discuss Question
Answer: Option D. -> Both B. & C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2170. The operating speed of a ball mill should be ______________ the critical speed?
  1.    Less than
  2.    Much more than
  3.    At least equal to
  4.    Slightly more than
 Discuss Question
Answer: Option A. -> Less than
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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