The slope of 9-line is determined by the__________________?

Related Mcqs:

1. Absorption factor is defined as (where, S1 = slope of the operating line S2 = slope of the equilibrium curve) ____________________?

   A. S2/S1
   B. S1/S2
   C. S1 – S2
   D. S1 × S2

2. The slope of 9-line is determined by the______________________?

   A. Reflux ratio
   B. Plate efficiency to be achieved
   C. Thermal condition of the feed
   D. Relative volatility

3. On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in______________________?

   A. Greater degree of separation with a fixed number of trays
   B. Increased reboiler load
   C. Increased reflux ratio
   D. None of these

4. The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is__________________?

   A. 0
   B. ∞
   C. -ve
   D. +ve

5. The individual mass transfer co-efficients (moles/m2s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

   A. Liquid side
   B. Gas side
   C. Interfacial
   D. Both liquid and gas side

6. In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of_________________?

   A. 1.5
   B. -0.6
   C. -1.5
   D. 0.6

7. When both the fluids flow concurrently in an absorber, the slope of the operating line is____________________?

   A. -ve
   B. +ve
   C. 1
   D. -1

8. If f = moles of vapour present per mole of feed, then the slope of feed line is (McCabe- Thiele method) ________________________?

   A. (1 – f)/f
   B. – (f – 1)/f
   C. -1/f
   D. -f/(1 – f)

9. The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line) ?

   A. L/mG
   B. G/mL
   C. mL/G
   D. LG/m

10. 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___________________?

    A. L/G
    B. G/L
    C. Always < 1
    D. None of these