In Azeotropic mixture, the equilibrium vapour composition is____________________?

Related Mcqs:

1. 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

2. Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid) ?

   A. p = P
   B. p >>P
   C. p < P
   D. p << P

3. The relative volatility of a binary mixture at the Azeotropic composition is _______________________?

   A. 1
   B. > 1
   C. 0
   D. ∞

4. An Azeotropic mixture is a ________________ mixture?

   A. Binary
   B. Ternary
   C. Constant boiling point
   D. None of these

5. One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect ?

   A. The product composition but not the fraction vaporised
   B. The product composition as well as the fraction vaporised
   C. The fraction vaporised but not the product composition
   D. Neither the product composition nor the fraction vaporised

6. The equilibrium liquid composition compared to the vapor composition in case of________________?

   Azeotropic mixture is
   A. More
   B. Less
   C. Same
   D. Either more or less; depends on the system

7. 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

8. The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C ?

   A. 25
   B. > 25
   C. < 25
   D. – 25

9. The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C?

   A. 25
   B. > 25
   C. < 25
   D. – 25

10. The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?

    A. Reducing the total pressure
    B. Increasing the total pressure
    C. Reducing the temperature
    D. Both B. and C.