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MCQs

Total Questions : 3241 | Page 324 of 325 pages
Question 3231. If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is___________________?
  1.    L/G
  2.    G/L
  3.    Always < 1
  4.    None of these
 Discuss Question
Answer: Option A. -> L/G
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3232. Berl saddle made of carbon cannot be used for ___________________?
  1.    Alkalis
  2.    SO2
  3.    H2SO4
  4.    Oxidising atmosphere
 Discuss Question
Answer: Option D. -> Oxidising atmosphere
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3233. For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of _______________ microns (1 mm = 1000 microns)?
  1.    1-5
  2.    10-60
  3.    200-300
  4.    > 500
 Discuss Question
Answer: Option B. -> 10-60
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3234. Capacity of a rotary dryer depends on its __________________?
  1.    rpm
  2.    Inclination with ground surface
  3.    Both A. and B.
  4.    Neither A. nor B.
 Discuss Question
Answer: Option C. -> Both A. and B.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3235. The most common packing used in industrial operations is _______________ rings?
  1.    Raschig
  2.    Lessing
  3.    Cross-partition
  4.    Single spiral
 Discuss Question
Answer: Option A. -> Raschig
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3236. Refractory bricks are usually dried in a ________________ dryer?
  1.    Tray
  2.    Tunnel
  3.    Conveyor
  4.    Festoon
 Discuss Question
Answer: Option B. -> Tunnel
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3237. Occurrence of ‘case hardening’ during drying of a high moisture solid cake _______________ the drying rate?
  1.    Increases
  2.    Decreases
  3.    Does not affect
  4.    Exponentially increases
 Discuss Question
Answer: Option B. -> Decreases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3238. The binary diffusivity in gases at atmospheric conditions is about ___________________?
  1.    10-9 cm/sec
  2.    10-1 cm2/sec
  3.    10-3 sec/cm
  4.    10-4 cm2/sec2
 Discuss Question
Answer: Option B. -> 10-1 cm2/sec
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3239. _____________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid ?
  1.    Dew point
  2.    Bubble point
  3.    Dry bulb temperature
  4.    Wet bulb temperature
 Discuss Question
Answer: Option A. -> Dew point
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3240. For absorbers, high pressure drop results in___________________?
  1.    Increased efficiency
  2.    Decreased efficiency
  3.    High operating cost
  4.    Better gas liquid contact
 Discuss Question
Answer: Option C. -> High operating cost
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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