Related Mcqs:

1. The Hatta number is important in_________________?

   A. Multi-component distillation
   B. Binary distillation
   C. Gas absorption without chemical reaction
   D. Gas absorption with chemical reaction

2. 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

3. Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation ?

   A. Cost
   B. Availability
   C. Toxicity
   D. Selectivity

4. Most important factor to be considered in the selection of packings for absorbers is the ______________ of packing?

   A. Size
   B. Durability
   C. Porosity
   D. Cost

5. Most important factor to be considered in the selection of packings for absorbers is the ______________ of packing?

   A. Size
   B. Durability
   C. Porosity
   D. Cost

6. In which of the following unit operations, the selectivity is an important parameter ?

   A. Distillation
   B. Solvent extraction
   C. Absorption
   D. None of these

7. Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of__________________?

   A. Mass diffusivity to momentum diffusivity
   B. Thermal diffusivity to mass diffusivity
   C. Momentum diffusivity to thermal diffusivity
   D. None of these

8. Which of the following plays an important role in problems of simultaneous heat and mass transfer ?

   A. Lewis number
   B. Schmidt number
   C. Prandtl number
   D. Sherwood number

9. For absorbing a sparingly soluble gas in a liquid, the_____________________?

   A. Gas side co-efficient should be increased
   B. Liquid side coefficient should be increased
   C. Gas side co-efficient should be decreased
   D. Liquid side co-efficient should be decreased

10. The assumption made in Elis method in distillation is that enthalpy concentration lines of vapor and liquid are __________________?

    A. Parallel
    B. Straight
    C. Both parallel and straight
    D. Neither parallel nor straight