With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent______________________?

Related Mcqs:

1. With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent ?

   A. Increases
   B. Decreases
   C. Remain same
   D. Either A. or B., depends on the system

2. If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that___________________?

   A. The system comprises of partially miscible liquids
   B. The system comprises of miscible liquids
   C. The system comprises of an azeotrope
   D. On heating, a vapor phase will appear; while on cooling, a solid phase will appear

3. Bound moisture is that liquid which exerts an equilibrium vapor pressure ________________ that of the pure liquid at the given temperature ?

   A. Less than
   B. More than
   C. Equal to
   D. Either A. or B.; depends on the solid

4. At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent __________________?

   A. Increases
   B. Decreases
   C. Remains unchanged
   D. Increases exponentially

5. With increase in the concentration of the adsorbate, the integral heat of adsorption____________________?

   A. Increases
   B. Decreases
   C. Remains unchanged
   D. May increase or decrease; depends on the type of adsorbate

6. The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or “outgassed” adsorbent to from a definite concentration of adsorbate is called its_____________________?

   A. Integral heat of adsorption
   B. Heat of wetting
   C. Differential heat of adsorption
   D. Heat of normal condensation

7. Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the ________________ temperature?

   A. Dry-bulb
   B. Wet-bulb
   C. Dew point
   D. Adiabatic saturation

8. An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is__________________?

   A. 0.048
   B. 0.079
   C. 0.122
   D. 0.152

9. At equilibrium the concentration of water in vapour phase (C*) in kg/m3 of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m3 containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is_________________?

   A. 0.0
   B. 0.2
   C. 0.4
   D. 1.0

10. Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the _______________ moisture?

    A. Free
    B. Unbound
    C. Equilibrium
    D. Bound