What is the reflux ratio at total reflux ?
A. Zero
B. Infinity
C. Unity
D. Data insufficient
Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure) ?
In case of gases, the binary diffusivity is proportional to (where, P = pressure) ?
A. P
B. 1/P
C. 1/√P
D. √P
Air at a particular humidity is heated in a furnace. The new dew point_____________________?
Air at a particular humidity is heated in a furnace. The new dew point_____________________?
A. Decreases
B. Increases
C. Depends on the extent of heating
D. Remain unchanged
Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent ______________________?
Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent ______________________?
A. A pure component
B. A binary mixture
C. A ternary mixture
D. Partially miscible ternary system
Which of the following unit operations makes use of Thiele-Geddes equation ?
Which of the following unit operations makes use of Thiele-Geddes equation ?
A. Liquid-liquid extraction
B. Solid-liquid extraction
C. Multi-component absorption with chemical reaction
D. Multi-component distillation
The-relative volatility for separation of a non-ideal binary mixture by distillation should be ___________________?
The-relative volatility for separation of a non-ideal binary mixture by distillation should be ___________________?
A. 0
B. 1
C. > 1
D. < 1
If moisture content of solid on dry basis is X, then the same on wet basis is____________________?
If moisture content of solid on dry basis is X, then the same on wet basis is____________________?
A. X/(X + 1)
B. X/(1 – X)
C. (1 + X)/X
D. (1 – X)/X
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because__________________?
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because__________________?
A. Water has a high latent heat of evaporation
B. Lewis number is close to unity
C. They are always equal under all circumstances
D. Solubility of the components of air in water is very small
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as_____________________?
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as_____________________?
A. Ri = Re/(1 – Re)
B. Ri = (1 – Re)/Re
C. Ri = Re
D. Ri = Re/(1 + Re)
Separation of two or more components of a liquid solution cannot be achieved by___________________?
Separation of two or more components of a liquid solution cannot be achieved by___________________?
A. Fractional crystallisation
B. Liquid extraction
C. Absorption
D. Evaporation