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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Decoction
Percolation
Dissolution
Agitation and settling

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Mass Transfer
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

Remains unaffected
Decreases
Increases Linearly
Increases

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Mass Transfer
In batch distillation with constant reflux, overhead product composition __________ with time.

May increase on decrease, depends on the system
Increases
Does not vary
Decreases

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Mass Transfer
With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas

Remains same
Decreases linearly
Decreases
Increases

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Mass Transfer
Antibiotics are best handled in a

Pulsed column extractor
Podbielniak extractor
Sieve tray contractor
Rotating disc contactor

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Mass Transfer
If a₁ and a₂ are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement.

a₁ = 0.5 a₂
a₁ = 2a₂
a₁ = a₂
None of these

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