Bound moisture is that liquid which exerts an equilibrium vapor pressure __________ that of the pure liquid at the given temperature.

Pick out the wrong statement

For an absorber, both equilibrium and operating line will be straight for

Pick out the wrong statement pertaining to the cooling towers.

In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

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

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 At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped).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,

Lewis number (Le) is

When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.

Which of the following equipments is not used for liquid dispersion ?

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

Which of these columns incurs the lowest pressure drop ?

A packed tower compared to a plate tower for a particular mass transfer operation

Which of the following equipments is not used for gas dispersion ?

Minimum possible diameter of a packed coloumn is decided mainly by the

Which of the following adsorbent is used to decolourise yellow glycerine ?

In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase.

Which of the following is the most commonly used leaching solvent in vegetable oil industry ?

In an absorber, HETP does not vary with the

One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect

Solvent used in extractive distillation

Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

Molecular seives are regenerated by heating to __________ °C.

If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is

Radioactive nuclear waste is treated in

Large quantity of silica gel is normally dried in a __________ dryer.

For the same system, if the same liquid used in an absorber is decreased, the tower height will

Which of the following same diameter columns gives lowest pressure drop per unit height ?

Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

__________ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Diameter of raschig rings used in packed tower in industry is normally around __________ inches.

Capacity of a rotary dryer depends on its

__________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid.

Which of the following remains constant during evaporative cooling process with recirculated water supply ?

Large scale drying of sugar is done in a __________ dryer.

Humid volume is the total volume in m³ of 1 kg of

Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.

Inside the distillation column, the

The expression, y(1 - x)/x(1 - y) is for

The diffusion co-efficient in m² /s. of acetic acid in benzene (liquid in liquid) is

With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop

The cooling effect in a cooling tower can be speeded up by

Rate of leaching increases with increasing

An azeotropic mixture is a __________ mixture.

In a counter-current extractor, as the axial mixing increases, the extraction efficiency

For stripping of a gas in a counter current stripper, the operating line

When both the fluids flow concurrently in an absorber, the slope of the operating line is

__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

The drying time between fixed moisture contents within the 'constant rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )