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MCQs

Total Questions : 3241 | Page 261 of 325 pages
Question 2601. Which of the following is not fixed by the process requirements, in the design of absorbers ?
  1.    Flow rate of the entering gas
  2.    Composition of the entering liquid
  3.    Terminal concentrations of gas stream
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2602. With increase in the mass velocity of the gas, the rate of drying during the constant rate period ______________, if the conduction and radiation through the solid are negligible ?
  1.    Increases
  2.    Decreases
  3.    Remain same
  4.    Increases linearly
 Discuss Question
Answer: Option A. -> Increases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2603. Reboiler is considered as one theoretical plate, because_____________________?
  1.    Of the assumption that vapour and liquid leaving the reboiler are in equilibrium
  2.    Vapour is recycled to the column
  3.    Reboiler itself contains one plate
  4.    None of these
 Discuss Question
Answer: Option A. -> Of the assumption that vapour and liquid leaving the reboiler are in equilibrium
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2604. Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C ?
  1.    Humidification only
  2.    Heating only
  3.    Both heating and humidification
  4.    Evaporative cooling
 Discuss Question
Answer: Option C. -> Both heating and humidification
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2605. Pick out the wrong statement. Generally for physical adsorption, a gas of________________?
  1.    Higher molecular weight is adsorbed in preference to a gas of low molecular weight
  2.    High critical temperature is adsorbed in preference to a gas of low critical temperature
  3.    Low volatility is adsorbed in preference to a gas of high volatility
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2606. When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system ?
  1.    As the acetone concentration increases, the solubility curves approach each other
  2.    Both the phases become identical at a particular common point on both the solubility curves called the plait point
  3.    The distribution curve which is a plot between x (acetone concentration in one phase) and y (acetone concentration in other phase) is analogous to x-y
  4.    All A., B. and C.
 Discuss Question
Answer: Option D. -> All A., B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2607. Molecular sieves are regenerated by heating to ______________ °C?
  1.    < 150
  2.    200-330
  3.    > 500
  4.    > 1000
 Discuss Question
Answer: Option B. -> 200-330
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2608. Co-current absorbers are usually used when the gas to be dissolved in the liquid is ___________________?
  1.    Sparingly soluble
  2.    Highly soluble
  3.    A pure substance
  4.    A mixture
 Discuss Question
Answer: Option C. -> A pure substance
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2609. In triangular co-ordinates, the ternary composition point falls ___________________ of the triangle?
  1.    In the corners
  2.    Inside
  3.    On the sides
  4.    None of these
 Discuss Question
Answer: Option B. -> Inside
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2610. During sensible cooling process ______________________?
  1.    Relative humidity decreases
  2.    Relative humidity increases
  3.    Wet bulb temperature decreases
  4.    Both B. and C.
 Discuss Question
Answer: Option D. -> Both B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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