A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is

Mass Transfer
A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is

1000

1500

2000

2500

1000

1500

2000

2500

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Mass Transfer
Which of the following processes is not an example of adsorption applied to gaseous separations?

Removal of objectionable odour and impurities from industrial gases

Recovery of valuable solvent vapors from dilute mixture with air and other gases

Decolouration of yellow glycerene

Dehumidification of air and gas

Removal of objectionable odour and impurities from industrial gases

Recovery of valuable solvent vapors from dilute mixture with air and other gases

Decolouration of yellow glycerene

Dehumidification of air and gas

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Mass Transfer
Wetted wall tower experiment determines the

Molal diffusivity

Mass transfer co-efficient

Volumetric co-efficient

None of these

Molal diffusivity

Mass transfer co-efficient

Volumetric co-efficient

None of these

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Mass Transfer
Positive deviation from Raoult's law means a mixture whose total pressure is

Less than that computed for ideality

Greater than that computed for ideality

Less than the sum of the vapour pressure of the components

None of these

Less than that computed for ideality

Greater than that computed for ideality

Less than the sum of the vapour pressure of the components

None of these

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Smaller than

Greater than

Either A, or B ; depends on the type of packing

Equal to

Smaller than

Greater than

Either A, or B ; depends on the type of packing

Equal to

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Mass Transfer
In steam distillation, the

Temperature is 100°C

Temperature is more than 100° C

Product must be immiscible with water

Temperature is higher than the boiling point of either component

Temperature is 100°C

Temperature is more than 100° C

Product must be immiscible with water

Temperature is higher than the boiling point of either component

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Mass Transfer

Mass Transfer Which of the following processes is not an example of adsorption applied to gaseous separations?

Mass Transfer Wetted wall tower experiment determines the

Mass Transfer Positive deviation from Raoult's law means a mixture whose total pressure is

Mass Transfer In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Mass Transfer In steam distillation, the

Mass Transfer
Which of the following processes is not an example of adsorption applied to gaseous separations?

Mass Transfer
Wetted wall tower experiment determines the

Mass Transfer
Positive deviation from Raoult's law means a mixture whose total pressure is

Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Mass Transfer
In steam distillation, the