An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is

Mass Transfer
An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is

0.152

0.048

0.079

0.122

0.152

0.048

0.079

0.122

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Mass Transfer
An example of elutioh is

Dissolution of tannin out of tree barks by water

Separation of sugar from sugar beet by hot water

Separation of uranium oxide from its ore by H₂SO₄ in a Pachuca tank

Recovery of vegetable oils from seeds

Dissolution of tannin out of tree barks by water

Separation of sugar from sugar beet by hot water

Separation of uranium oxide from its ore by H₂SO₄ in a Pachuca tank

Recovery of vegetable oils from seeds

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Mass Transfer
Overall efficiency of the distillation column is

Same as the Murphree efficiency

The ratio of number of actual plates to ideal plates

The ratio of number of ideal plates to actual plates

Always more than the point efficiency

Same as the Murphree efficiency

The ratio of number of actual plates to ideal plates

The ratio of number of ideal plates to actual plates

Always more than the point efficiency

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Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Kissinevskii

Toor and Marchello

Higbie

Danckwerts

Kissinevskii

Toor and Marchello

Higbie

Danckwerts

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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?

Dehumidification with dry bulb temperature remaining constant

Cooling and dehumidification

None of these

Heating and dehumidification at almost constant wet bulb temperature

Dehumidification with dry bulb temperature remaining constant

Cooling and dehumidification

None of these

Heating and dehumidification at almost constant wet bulb temperature

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Mass Transfer
For the same process conditions, the reflux ratio of an unlagged distillation column

None of these

Increases in summer

Increases in winter

Decreases in winter

None of these

Increases in summer

Increases in winter

Decreases in winter

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Mass Transfer

Mass Transfer An example of elutioh is

Mass Transfer Overall efficiency of the distillation column is

Mass Transfer Penetration model (theory) for mass transfer was enunciated by

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 For the same process conditions, the reflux ratio of an unlagged distillation column

Mass Transfer
An example of elutioh is

Mass Transfer
Overall efficiency of the distillation column is

Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

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
For the same process conditions, the reflux ratio of an unlagged distillation column