Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Degree of ideality of the solution Neither A nor B Viscosity with concentration Both A & B Degree of ideality of the solution Neither A nor B Viscosity with concentration Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is < 1 > 1 1 < 1 > 1 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower) L/(FG.G) FG/(G.a) (G.a)/FG F/(FG.a) L/(FG.G) FG/(G.a) (G.a)/FG F/(FG.a) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent. 100 50 Between 0 and 100 100 50 Between 0 and 100 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer 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 coloumn. 10 12 8 6 10 12 8 6 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Absorption accompanied with chemical reaction is exemplified by the absorption of All of these Benzol present in coke oven gas by wash oil Ammonia in water SO₂ in alkaline solution All of these Benzol present in coke oven gas by wash oil Ammonia in water SO₂ in alkaline solution ANSWER DOWNLOAD EXAMIANS APP
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