Chemical Engineering · all questions

Mass Transfer
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Q461

The value of

\frac{N _{A}}{N _{A} + N _{B}},

for steady state equimolal counter diffusion of two gases 'A' and 'B' is

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Q462

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

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Q463

Reboiler is considered as one theoretical plate, because

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Q464

Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in

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Q465

Which of the following is not a continuous leaching equipment?

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Q466

Pick out the wrong statement.

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Q467

At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

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Q468

Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

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Q469

Which of the following mixtures does not form an azeotrope at atmosheric pressure?

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Q470

With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

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Q471

If R_m is the minimum reflux ratio, the optimum reflux ratio may be around __________ R_m.

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Q472

Which of the following is a suitable absorbent for removal of H₂S from natural gas?

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Q473

Which of the following solutions will follow Raoult's law most closely?

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Q474

Wetted wall tower experiment determines the

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Q475

Separation of __________ employs gaseous diffusion process.

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Q476

A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,

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Q477

The most common packing used in industrial operations is __________ rings.

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Q478

Physical absorption is

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Q479

Pick out the wrong statement

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Q480

Plate efficiency

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