A. Straight line
B. Slightly concave upward
C. Slightly concave downward
D. None of these
The adiabatic saturation curve for a vapour-gas mixture is__________________? Read More »
Mass Transfer A. Lift and shower the solids thus exposing it thoroughly to the drying action of the gas
B. Reduce the residence time of solid
C. Increase the residence time of the solid
D. None of these
Flights in a rotary dryer are provided to________________? Read More »
Mass Transfer A. Diffusion
B. Bulk flow
C. Both A. & B.
D. Neither A. nor B.
Stefan’s law describes the mass transfer by________________? Read More »
Mass Transfer A. Relative volatility is reasonably constant
B. Mixture (to be separated) shows negative deviation from ideality
C. Mixture (to be separated) shows positive deviation from ideality
D. Multi-component distillation is involved
A. Increases pressure drop, increases surface area
B. Increases pressure drop, decreases surface area
C. Decreases pressure drop, increases surface area
D. Decreases pressure drop, decreases surface area
A. 1
B. 1
D. ∞
A. Increasing the gas film co-efficient
B. Increasing the liquid film co-efficient
C. Increasing the total pressure
D. Decreasing the total pressure
A. 0.01
B. 0.1
C. 10-5 to 10-6
D. > 1
Liquid diffusivity is of the order of _______________ cm2 /second? Read More »
Mass Transfer A. Transfer of molecules from low concentration to high concentration region
B. Thermal energy of the molecules
C. Activation energy of the molecules
D. Potential energy of the molecules
Molecular diffusion is caused by the________________? Read More »
Mass Transfer A. Newtonian liquids
B. Non-Newtonian liquids
C. Ideal gases
D. Real gases
