Gases diffuse faster compared to liquids because of the reason that the liquid molecules_________________?

Related Mcqs:

1. “The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface”. This statement pertaining to the solubility of gases in liquid is the ______________ law?

   A. Raoult’s
   B. Henry’s
   C. Amagat’s
   D. None of these

2. In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?

   A. More
   B. Less
   C. Same
   D. Unpredictable; depends on the particular reaction

3. Except for monatomic gases, the molal heat capacity at constant volume for all gases is _____________ Kcal/Kg mole.° K?

   A. 3
   B. > 3
   C. < 3
   D. < 1

4. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?

   A. Mixing
   B. Adsorption
   C. Wetting
   D. Complete wetting

5. Faster rate of drying of moulded refractories results in high ______________ of refractories?

   A. Green strength
   B. Voids
   C. Shrinkage
   D. Both B. and C.

6. The vapor pressure of a substance, at its melting point, is _____________ in the solid state as compared to that in the liquid state?

   A. Less
   B. More
   C. Same
   D. Either A. or B.; depends on the nature of the substance

7. Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor ?

   A. d ln p/dt = Hvap/RT2
   B. d ln p/dt = RT2/Hvap
   C. dp/dt = RT2/Hvap
   D. dp/dt = Hvap/RT2

8. At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be________________?

   A. More
   B. Less
   C. Same
   D. More or less; depending on the system

9. Which of the following gravity scales is used exclusively for liquids heavier than water ?

   A. Baume scale
   B. Twaddell scale
   C. API scale
   D. None of these

10. The vapor pressure of liquids of similar chemical nature at any particular temperature _______________ with increase in the molecular weight?

    A. Increases
    B. Decreases
    C. Remains unchanged
    D. Either A. or B.; depends on the liquid