Q. Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

View solution

Q. In liquid-liquid extraction, the number of phases at plait point is

View solution

Q. In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas solute C is soluble in both the solvents. The extraction process attains equilibrium. The equilibrium relationship between the two phases is Y* = 0.9X, where Y* is the kg of C/kg of B and X is kg of C/kg of A. Choose the correct answer.

View solution

Q. Mass transfer co-efficient is directly proportional to Dᴀʙ^0.5, according to __________ theory.

View solution

Q. Sand is dried in foundaries in a___drier.

View solution

Q. Which of the following employs an accessory known as 'drift eliminator' ?

View solution

Q. Pick out the correct statement.

View solution

Q. Pick out the correct statement.

View solution

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

View solution

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

View solution

Q. In a distillation column, with increase in the reflux ratio, the heat removed in the cooler

View solution

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