List of top Chemical, Thermal and Polymer Engineering Questions on Mass Transfer

Which law is used to describe steady-state diffusion in gases?
Match LIST-I with LIST-II and select the correct answer using the codes given below the lists.\[\begin{array}{|c|c|} \hline \textbf{LIST-I} & \textbf{LIST-II} \\ \hline \text{A. Rotary atomizer} & \text{1. Kinetic energy} \\ \hline \text{B. Relative volatility} & \text{2. Centrifugal energy} \\ \hline \text{C. Pneumatic nozzle} & \text{3. Distillation} \\ \hline \text{D. Selectivity} & \text{4. Liquid-liquid extraction} \\ \hline \end{array}\] Choose the correct answer from the options given below:
The McCabe-Thiele method used to find the number of theoretical stages required in a distillation operation is based on the assumption(s) that:
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is:
For economical operation in gas absorption, the operating line approximately:
Which of the following is used as an 'entrainer' in the separation of acetic acid-water mixture by distillation?
A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day when it is concentrating from 10% to 35% solids. The water evaporated in kg per day is:
In the McCabe-Thiele diagram for binary distillation, vertical feed line represents ......., and horizontal feed line represents ............ feed.
Sugar is leached from sugar beets with:
In a small column, local efficiency is equal to Murphree efficiency, and in a large column, local efficiency is:
In the absorption of a solute gas from a mixture containing inerts in a solvent, it has been observed that the overall gas transfer coefficient is nearly equal to the individual gas film transfer coefficient. It may therefore be concluded that:
Flash distillation is used at a large scale in:
HETP is numerically equal to HTU only when the operating line:
Which of the following is a continuous filter?