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Mass Transfer

Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Festoon
Heated cylinder
Conveyor
Tunnel

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Mass Transfer
If moisture content of solid on dry basis is X, then the same on wet basis is

X/(X - 1)
(X - 1)/X
(X + 1)/X
X/(X + 1)

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Mass Transfer
Which of the following assumes constant molal vaporisation and overflow?

Ponchan-Savarit method
McCabe-Thiele method
Enthalpy concentration method
Plate absorption column

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Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

None of these
Greater degree of separation with a fixed number of trays
Increased reboiler load
Increased reflux ratio

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Mass Transfer
High pressure at the bottom of a distillation tower handling heat sensitive materials results in

Increased relative volatility
Erosion of the tower
Very efficient operation
Thermal decomposition of bottoms

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Mass Transfer
Design calculation for multiple component distillation is done by

Ponchon-Savarit method
Tray to tray calculations
Mccabe-Thiele method
Enthalpy concentration method

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