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

2500

1500

2000

1000

2500

1500

2000

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Mass Transfer
Molecular seives are porous

None of these

Alumina

Synthetic zeolites crystals/metal alumino-silicates

Silica

None of these

Alumina

Synthetic zeolites crystals/metal alumino-silicates

Silica

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Mass Transfer
Stacked packing compared to dumped packing

Gives lower pressure drop

Both A & B

Gives higher pressure drop

Provides poorer contact between the fluids

Gives lower pressure drop

Both A & B

Gives higher pressure drop

Provides poorer contact between the fluids

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Mass Transfer
A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

18.7

27.3

21.7

20

18.7

27.3

21.7

20

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Mass Transfer
When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of

Partial pressure of component A to the total pressure

Vapour pressure of component A to the partial pressure of A

Vapour pressure of component A to that of component B

Vapour pressure of component A to the total pressure

Partial pressure of component A to the total pressure

Vapour pressure of component A to the partial pressure of A

Vapour pressure of component A to that of component B

Vapour pressure of component A to the total pressure

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Mass Transfer
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

Remains unaffected

Increases Linearly

Decreases

Increases

Remains unaffected

Increases Linearly

Decreases

Increases

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Mass Transfer

Mass Transfer Molecular seives are porous

Mass Transfer Stacked packing compared to dumped packing

Mass Transfer A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

Mass Transfer When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of

Mass Transfer With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

Mass Transfer
Molecular seives are porous

Mass Transfer
Stacked packing compared to dumped packing

Mass Transfer
A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

Mass Transfer
When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of

Mass Transfer
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)