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Mass Transfer

Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

< 1
> 1
1
0.5

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Mass Transfer
The binary diffusivity in gases at atmospheric conditions is about

10-4 cm²/seC₂
10-3 sec/cm
10-1 cm²/sec
10-9 cm/sec

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Mass Transfer
Molecular seives are regenerated by heating to __________ °C.

< 150
> 1000
200-330
> 500

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Mass Transfer
Which of the following is used for the concentration of rubber latex?

Long tube vertical evaporator
Agitated film evaporator
Calendria
Short tube evaporator

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Mass Transfer
The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its

Differential heat of adsorption
Integral heat of adsorption
Heat of wetting
Heat of normal condensation

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Stanton
Peclet
Sherwood
Lewis

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