Mass Transfer | Test For NTS PPSC FPSC, TEST

Pick out the wrong statement ?

A. The mole fraction of solute is directly proportional to the molality of a ‘dilute’ solution
B. For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both
components is nonlinear in the case of steady state unimolal unidirectional diffusion
C. Azeotropes obey Raoult’s law at all temperature
D. The relative volatility of a binary mixture at the Azeotropic composition is 1

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Category: Mass Transfer

A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process ?

In liquid-liquid extraction, the number of phases at plait point is __________________?

Mass transfer co-efficient is directly proportional to DAB 0.5, according to ________________ theory ?

Perforated plate towers are unique for solvent extraction because, they provide_____________________?

Pick out the wrong statement ?

Laboratory determination of the diffusivity of vapor is done by __________________ method?

Laboratory determination of the diffusivity of vapor is done by ______________ method?

Leaching of sugar from sugar beets is done by___________________?

It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%) ?

If the amount of the steam used in steam distillation is increased, the temperature of distillation__________________?