Q. Pick out the wrong statement.

View solution

Q. If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

View solution

Q. During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

View solution

Q. In case of absorption, both the operating and equilibrium lines will be straight for

View solution

Q. Mass transfer co-efficient varies as Dᴀʙ^0.5, according to the __________ theory.

View solution

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

View solution

Q. Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and

View solution

Q. Humid volume, at a given temperature is a/an __________ function of humidity.

View solution

Q. The Schmidt number which is defined as, μ/ρ D, is the ratio of the

View solution

Q. If f is defined as above, then which of the following applies to a feed at dew point ?

View solution

Q. The falling rate period in the drying of a solid is characterised by

View solution

Q. In which of the following unit operations, the selectivity is an important parameter ?

View solution

Q. Which of the following is an undesirable characteristic for the solvent used in gas absorption ?

View solution

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

View solution

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

View solution

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

View solution

Q. In physical terms, Schmidt number means

View solution

Q. In case of liquids, the binary diffusivity is proportional to (where, T = temperature)

View solution

Q. The diffusivity, Dᴀʙ (for component A diffusing in B) is equal to the diffusivity Dʙᴀ (for component B diffusing in A) for a binary mixture of

View solution

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

View solution