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MCQs

Total Questions : 3241 | Page 319 of 325 pages
Question 3181. The diffusivity D. in a binary gas mixture is related to the temperature (T) as________________________?
  1.    D ∝ T
  2.    D ∝ T0.5
  3.    D ∝ T1.5
  4.    D ∝ T2
 Discuss Question
Answer: Option C. -> D ∝ T1.5
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3182. The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or “outgassed” adsorbent to from a definite concentration of adsorbate is called its_____________________?
  1.    Integral heat of adsorption
  2.    Heat of wetting
  3.    Differential heat of adsorption
  4.    Heat of normal condensation
 Discuss Question
Answer: Option A. -> Integral heat of adsorption
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3183. Boiling point diagram is not affected by the ambient______________________?
  1.    Pressure
  2.    Humidity
  3.    Temperature
  4.    Both B. and C.
 Discuss Question
Answer: Option D. -> Both B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3184. Total reflux in a distillation operation requires minimum____________________?
  1.    Reboiler load
  2.    Number of plates
  3.    Condenser load
  4.    All A., B. and C.
 Discuss Question
Answer: Option B. -> Number of plates
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3185. The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = _________________?
  1.    1
  2.    0.5
  3.    10
  4.    0
 Discuss Question
Answer: Option A. -> 1
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3186. At a fixed total pressure, humidity depends only on the _______________________?
  1.    Partial pressure of vapour in the mixture
  2.    Heat capacity of the vapour
  3.    Density of the vapour
  4.    None of these
 Discuss Question
Answer: Option A. -> Partial pressure of vapour in the mixture
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3187. In extractive distillation, solvent is_____________________?
  1.    Added to alter the relative volatility of the mixture
  2.    Of high volatility
  3.    Present in overhead stream
  4.    Of high viscosity to give high tray efficiency
 Discuss Question
Answer: Option A. -> Added to alter the relative volatility of the mixture
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3188. Which of the following quantities need not be fixed before starting the design of a cocurrent absorber ?
  1.    Heat gain or loss
  2.    Flow rate of entering liquid
  3.    Flow rate of gas
  4.    None of these
 Discuss Question
Answer: Option B. -> Flow rate of entering liquid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3189. Leaching of sugar from sugar beets is done by___________________?
  1.    Hot water
  2.    Hexane
  3.    Dilute H2SO4
  4.    Lime water
 Discuss Question
Answer: Option A. -> Hot water
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3190. Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air ?
  1.    Dry bulb temperature
  2.    Dew point
  3.    Wet bulb temperature
  4.    None of these
 Discuss Question
Answer: Option C. -> Wet bulb temperature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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