71. The critical moisture content in case of drying indicates the __________ rate period.
72. Rayleigh's equation applies to __________ distillation.
73. When the solvent dissolves very little of solute, then
74. For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same.
75. Ion exchange process is similar to
76. Mechanism of moisture removal in case of freeze drying of food stuff is by
77. The caking of crystals can be prevented by
78. A plait point is the point on the solubility curve, where the tie line reduces to a point. What is the number of plait point for a ternery system containing twopairs of partially miscible liquids?
79. In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg)
80. In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated.
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