Q. Schmidt number is given by

View solution

Q. The caking of crystals can be prevented by

View solution

Q. Prandtl number for water at 20°C is about

View solution

Q. Absorption factor method is used to calculate the number of ideal stages, when

View solution

Q. Flights in a rotary dryer are provided to

View solution

Q. If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that

View solution

Q. The rate of mass transfer is not dependent upon the

View solution

Q. On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

View solution

Q. __________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.

View solution

Q. Deairation (removal of O₂) of water is done by

View solution

Q. Make up water is supplied during cooling tower operation to compensate for water losses due to

View solution

Q. Pick out the wrong statement.

View solution

Q. The Kundsen diffusivity is proportional to (where, T = absolute temperature)

View solution

Q. In case of constant underflow extraction operation, the __________ at all solute concentration.

View solution

Q. In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

View solution

Q. The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp = M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force.)

View solution

Q. With increase in temperature, the leaching rate increases because of the

View solution

Q. __________ extractor uses centrifugal force for separating the two phases.

View solution

Q. In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

View solution

Q. Pick out the wrong statement.

View solution