Question 2551. Pressure drop through plate tower as compared to that through packed tower, for the same duty will be

Question 2552. The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

Question 2553. At minimum reflux ratio for a given separation

Question 2554. An azeotropic mixture is a __________ mixture.

Question 2555. According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B ? Assume that relative volatility (αAB = 2) does not change appreciably in the column ?

Question 2556. During the constant rate period of drying of a solid ?

Question 2557. Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is___________________?

Question 2558. H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?

Question 2559. As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages_______________________?

Question 2560. Large scale drying of sugar is done in a _______________ dryer?