The diffusion co-efficient in m2/s. of acetic acid in benzene (liquid in liquid) is___________________?
A. 2.09 × 10-4
B. 2.09 × 10-5
C. 2.09 × 10-9
D. 2.09 × 10-12
Month: February 2019
The ‘shanks system’ of leaching (i.e., counter-current multiple contact leaching) is used for____________________?
The ‘shanks system’ of leaching (i.e., counter-current multiple contact leaching) is used for____________________?
A. Recovery of tannis from the tree barks and woods
B. Leaching sodium nitrate from Chilean nitrate bearing rock
C. Both A. and B.
D. Neither A. nor B.
Which of the following employs an accessory known as ‘drift eliminator’ ?
Which of the following employs an accessory known as ‘drift eliminator’ ?
A. Multiple effect evaporator
B. Mechanical draft cooling tower
C. Rotary dryer
D. Rotating disc contactor
The term “approach” in a cooling tower refers to the difference in the temperature of the____________________?
The term “approach” in a cooling tower refers to the difference in the temperature of the____________________?
A. Cold water leaving the tower and the wet bulb temperature of the surrounding air
B. Hot water entering the tower and the wet bulb temperature of the surrounding air
C. Hot water entering and the cooled water leaving the cooling tower
D. None of these
Below is given an equilibrium moisture curve of a substance. State which regions represent free moisture and unbound moisture respectively ?
Below is given an equilibrium moisture curve of a substance. State which regions represent free moisture and unbound moisture respectively ?
A. II, III
B. II, IV
C. IV, III
D. IV, II
Humid volume, at a given temperature is a/an _______________ function of humidity?
Humid volume, at a given temperature is a/an _______________ function of humidity?
A. Inverse
B. Exponential
C. Linear
D. Logarithmic
Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is _______________ the liquid head available in the downcomer?
Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is _______________ the liquid head available in the downcomer?
A. Less than
B. More than
C. Same as
D. Very much less
Which of the following is an undesirable characteristic for the solvent used in gas absorption ?
Which of the following is an undesirable characteristic for the solvent used in gas absorption ?
A. Low vapor pressure
B. Low viscosity
C. High gas solubility
D. None of these
For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will_____________________?
For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will_____________________?
A. Increase
B. Decrease
C. Remain same
D. Data insufficient, can’t be predicted
A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture ?
A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture ?
A. The mixture exhibits an azeotrope at 101.3 kPa
B. The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and mxylene
10
C. The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10
D. The mixture contain optical isomers