Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 x 10⁻³ kg mole/m².s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m² .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is

Mass Transfer
Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 x 10⁻³ kg mole/m².s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m² .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is

5.6 x 10⁻⁴

8.5 x 10⁻⁴

5.6 x 10⁻³

8.5 x 10⁻³

5.6 x 10⁻⁴

8.5 x 10⁻⁴

5.6 x 10⁻³

8.5 x 10⁻³

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Mass Transfer
In a counter-current liquid extractor

Both liquids flow at fixed rate

Both liquids can have any desired flow rate

Only one of the liquids may be pumped at any desired rate

Liquid's flow rate depends upon the temperature and pressure

Both liquids flow at fixed rate

Both liquids can have any desired flow rate

Only one of the liquids may be pumped at any desired rate

Liquid's flow rate depends upon the temperature and pressure

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

None of these

Centrifugal

Packed

Plate

None of these

Centrifugal

Packed

Plate

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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.

Wet-bulb

Dew point

Dry-bulb

Adiabatic saturation

Wet-bulb

Dew point

Dry-bulb

Adiabatic saturation

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Mass Transfer
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).

15 min

94 min

71 min

51 min

15 min

94 min

71 min

51 min

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Mass Transfer
Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent?

None of these

Dehumidification with dry bulb temperature remaining constant

Heating and dehumidification at almost constant wet bulb temperature

Cooling and dehumidification

None of these

Dehumidification with dry bulb temperature remaining constant

Heating and dehumidification at almost constant wet bulb temperature

Cooling and dehumidification

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Mass Transfer

Mass Transfer In a counter-current liquid extractor

Mass Transfer Extraction of pencillin employs a __________ extraction coloumn.

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.

Mass Transfer It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).

Mass Transfer Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent?

Mass Transfer
In a counter-current liquid extractor

Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

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.

Mass Transfer
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).

Mass Transfer
Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent?