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Mass Transfer

Mass Transfer
Rose oil is extracted from rose leaves using __________ distillation.

Low pressure
Extractive
Steam
High pressure

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Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Half
Twice
Equal to
More than

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Mass Transfer
NSc/NPr is called the

Psychrometric ratio
Sherwood number
Stantan number
Lewis number

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Mass Transfer
At constant pressure, with increase of temperature, the dew point will

Increase/decrease ; depends on the temperature
Increase
Decrease
Remain unchanged

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Mass Transfer
Which of the following same diameter columns gives lowest pressure drop per unit height?

Randomly packed column
Bubble-cap column
Sieve-plate column
Packed column (stacked)

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Mass Transfer
COâ‚‚ can be absorbed by

Heated charcoal
Hot cupric oxide
Alumina
Cold Ca(OH)â‚‚

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