Chemical Process Calculations Mid - I, September - 2014

1.Real gases approach ideal behavior at
  • Low pressure and high temperature
  • high pressure and high temperature
  • High pressure and low temperature
  • low pressure and low temperature
Answer: A
2.One bar is almost equal to ______ atmosphere.
  • 1
  • 10
  • 100
  • 1000
Answer: A
3.One gram atom of Oxygen is equal to ----- gms
  • 16
  • 32
  • 1
  • 2
Answer: A
4.Ideal gas law is __________________
  • P = VRT
  • PV = RT
  • PV = nRT
  • R = PVT
Answer: C
5.Cox chart is a plot of
  • Temperature vs vapor pressure
  • temperature vs log of vapor pressure
  • log of temperature vs vapor pressure
  • log of temperature vs log of vapor pressure
Answer: B
6.Mole percent
  • weight percent
  • weight percent/2
  • volume percent
  • 2×volume percent
Answer: C
7.Average molecular weight of air is equal to --------
  • 28.84
  • 25
  • 26
  • 27.84
Answer: A
8.The relation between Relative Saturation (RS) and Percentage Saturation (PS) for a saturated mixture is
  • RS < PS
  • RS > PS
  • RS = PS
  • both b & c
Answer: C
9.A vapor whose partial pressure is less than its equilibrium vapor pressure is called as
  • saturated vapor
  • unsaturated vapor
  • super saturated vapor
  • Super heated vapor
Answer: D
10.STP pressure of 1 atm in inches of Hg ---
  • 29.92
  • 28
  • 27
  • 24
Answer: A
11.Dry bulb temperature is always ______________ than Wet bulb temperature
Answer: More
12.Relative saturation is called as relative humidity when the liquid is _____________
Answer: Water
13.The ice point in 0R is ______________
Answer: 4920R
14.Law of conservation of mass is _______________________
Answer: In (p / p)= ( / R) (1 / T0 ‐1 / T)
15.Cp - Cv, for an ideal gas is equal to ________________
Answer: R
16.Reduced pressure = ________________
Answer: P/Pc
17.Raoult’s law states that ____________
Answer: The equilibrium vapor pressure that is exerted by a cmpoent in a solution is proportional to the mole fraction of that component
18.The vapor that exists above its critical temperature is termed as a ______ vapor
Answer: Gaseous
19.A solution is made by dissolving 1 kilo mole of solute in 2000kg of solvent. The molality of the solution is _________
Answer: 0.5
20.The Vapour pressure of a solution is __________ that of the pure solvent
Answer: Lessthan