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# Test: Mass Transfer - 8

## 25 Questions MCQ Test Mass Transfer | Test: Mass Transfer - 8

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This mock test of Test: Mass Transfer - 8 for Chemical Engineering helps you for every Chemical Engineering entrance exam. This contains 25 Multiple Choice Questions for Chemical Engineering Test: Mass Transfer - 8 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Mass Transfer - 8 quiz give you a good mix of easy questions and tough questions. Chemical Engineering students definitely take this Test: Mass Transfer - 8 exercise for a better result in the exam. You can find other Test: Mass Transfer - 8 extra questions, long questions & short questions for Chemical Engineering on EduRev as well by searching above.
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QUESTION: 3

### A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is

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QUESTION: 4

Water entrained by circulating air in cooling towers is termed as

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QUESTION: 5

With increase in temperature, the rate of leaching increases, because the

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QUESTION: 6

The Kundsen diffusivity is proportional to (where, T = absolute temperature)

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QUESTION: 7

In case of constant underflow extraction operation, the __________ at all solute concentration.

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QUESTION: 8

In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

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QUESTION: 9

The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp = M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force.)

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QUESTION: 10

With increase in temperature, the leaching rate increases because of the

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QUESTION: 11

Leaching of uranium ore and gold ore is done in

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QUESTION: 12

Blowdown in a cooling tower

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QUESTION: 13

During constant rate period, the rate of drying decreases with the

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QUESTION: 14

Antibiotics are best handled in a

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QUESTION: 15

The fixed cost of a distillation column at minimum reflux ratio is

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QUESTION: 16

__________ extractor uses centrifugal force for separating the two phases.

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QUESTION: 17

In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

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QUESTION: 18

Pick out the wrong statement.

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QUESTION: 19

Acetic acid will be most economically separated from a dilute solution of acetic acid in water by

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QUESTION: 20

Design calculation for multiple component distillation is done by

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QUESTION: 21

To get high tray efficiency

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QUESTION: 22

The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is

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QUESTION: 23

Pick out the wrong statement. Generally for physical adsorption, a gas of

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QUESTION: 24

In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in

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QUESTION: 25

In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as

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