Q. When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.

View solution

Q. Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

View solution

Q. For a binary mixture with low relative volatility, continuous rectification to get pure products will require

View solution

Q. The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

View solution

Q. The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

View solution

Q. Entrainer used in azeotropic distillation should

View solution

Q. In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because

View solution

Q. Pick out the wrong statement.

View solution

Q. Leaching of coffee from coffee beans is done by

View solution

Q. For contacting a highly soluble gas with a liquid

View solution

Q. During drying operation, it is easier to remove the __________ moisture.

View solution

Q. With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas

View solution

Q. Ion exchange process is similar to

View solution

Q. A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,

View solution

Q. The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

View solution

Q. Smoke is an example of

View solution

Q. Which of the following adsorbant is used in the refinning of sugar ?

View solution

Q. Stacked packing compared to dumped packing

View solution

Q. In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

View solution

Q. Dryer widely used in a textile industry is __________ dryer.

View solution