Q. When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.

View solution

Q. For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

View solution

Q. The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the

View solution

Q. Unit of molal diffusivity is

View solution

Q. The term "approach" in a cooling tower refers to the difference in the temperature of the

View solution

Q. Binary distillation involves the mass transfer by __________ at the gas-liquid interface.

View solution

Q. Equilibrium-moisture curves of different solids

View solution

Q. Azeotropism for ethyl alcohol-water system disappears by

View solution

Q. Degree of freedom for leaching and solvent extraction process is

View solution

Q. Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the

View solution

Q. Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture ?

View solution

Q. Which of the following is a suitable absorbent for removal of H₂S from natural gas ?

View solution

Q. Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are

View solution

Q. Schimdt number and Lewis number for pure air at atmospheric conditions are respectively

View solution

Q. Molecular diffusion is caused by the

View solution

Q. At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.

View solution

Q. Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their

View solution

Q. Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation.

View solution

Q. Which of the following equipments is not used in liquid-liquid extraction ?

View solution

Q. Pick out the wrong statement.

View solution