Raoult’s law is applicable to the_____________________?

Related Mcqs:

1. 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

2. The Schmidt number which is defined as, μ/ρ D, is the ratio of the_____________________?

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

3. Advantage of continuous drying over batch drying is that the_____________________?

   A. Drying cost per unit weight of dried product is less
   B. Product with more uniform moisture content is produced
   C. Equipment size required is smaller
   D. All A , B. & C.

4. Channelling in a packed tower results from the_____________________?

   A. High pressure drop
   B. Maldistribution of liquid
   C. Non-uniformity of packing
   D. Both B. and C.

5. Gaseous diffusion co-efficient increases with increase in the_____________________?

   A. Pressure
   B. Temperature
   C. Both A. & B.
   D. Neither A. nor B.

6. If a two phase system is in physical equilibrium; then it means that, the_____________________?

   A. Escaping tendency of each component from the liquid phase to the vapor phase is exactly
   equal to that from vapor phase to liquid phase
   B. Temperature of the liquid phase is equal to that of the vapor phase
   C. Total pressure throughout the liquid phase is equal to that throughout the vapor phase
   D. All A., B. and C.

7. The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same system is_______________________?

   A. 100
   B. 10
   C. 5
   D. 1

8. Henry’s law states that the ________________________?

   A. Partial pressure of a component over a solution is proportional to its mole fraction in the
   liquid
   B. Partial pressure of a component over a solution is proportional to the mole fraction in the
   vapour
   C. Vapour pressure is equal to the product of the mole fraction and total pressure
   D. Partial pressure is equal to the product of the mole fraction and total pressure

9. Pick out the wrong statement. Raoult’s law does not apply, when the______________________?

   A. Size of component molecules are not equal
   B. Attractive forces between like and unlike molecules in the solution are approximately equal
   C. Component molecules are non-polar
   D. Chemical combination or molecular association between unlike molecules takes place in the
   formation of solution

10. The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an _________________ law?

    A. Exponential
    B. Parabolic
    C. Linear
    D. Cubic