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Mass Transfer

Mass Transfer
Berl saddle made of carbon cannot be used for

Oxidising atmosphere
SO₂
Alkalis
H₂SO₄

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

1/D
D
D1.5
D0.5

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Mass Transfer
Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty?

Wetted wall column
Bubble cap column
Sieve plate column
Randomly packed column

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Mass Transfer
Which of the following increases during evaporative cooling process with recirculated water supply?

Both B and C
Wet bulb temperature
Relative humidity
Partial pressure of vapour

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Mass Transfer
In case of absorption, both the operating and equilibrium lines will be straight for

None of these
Dilute solutions and isothermal operation
Dilute solutions
Isothermal operation

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Mass Transfer
Which of the following unit operations makes use of Thiele-Geddes equation?

Solid-liquid extraction
Multicomponent distillation
Multicomponent absorption with chemical reaction
Liquid-liquid extraction

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