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Mass Transfer

Mass Transfer
CO₂ can be absorbed by

Cold Ca(OH)₂
Alumina
Heated charcoal
Hot cupric oxide

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

Rapid absorption rates
Better flow characteristics
All of these
Low pumping pressure drop

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Mass Transfer
What is the reflux ratio at total reflux?

Zero
Data insufficient
Unity
Infinity

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Mass Transfer
Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content.

Tray
Rotary
None of these
Freeze

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Mass Transfer
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.

Adiabatic saturation
Dew point
Dry-bulb
Wet-bulb

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Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

> 25
-25
< 25
25

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