At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

99

95

91.5

90

99

95

91.5

90

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Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

(G.a)/FG

FG/(G.a)

F/(FG.a)

L/(FG.G)

(G.a)/FG

FG/(G.a)

F/(FG.a)

L/(FG.G)

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Mass Transfer
Pick out the wrong statement pertaining to the rotary dryer.

Rotary dryer is suitable for drying sticky material

Flights (located in the inside shell of rotary dryer) lift the material being dried and shower it down through the current of hot air/gases. It extends from the wall to a distance which is about 8-12%

Hold up of a rotary drier is defined as the fraction of the dryer volume occupied by the solid at any instant. The best performance for rotary drier is obtained, when the hold up is in the range of 0.

Recommended peripherial speed of a rotary drier is in the range of 10 to 30 metres/minute

Rotary dryer is suitable for drying sticky material

Flights (located in the inside shell of rotary dryer) lift the material being dried and shower it down through the current of hot air/gases. It extends from the wall to a distance which is about 8-12%

Hold up of a rotary drier is defined as the fraction of the dryer volume occupied by the solid at any instant. The best performance for rotary drier is obtained, when the hold up is in the range of 0.

Recommended peripherial speed of a rotary drier is in the range of 10 to 30 metres/minute

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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

Heating and dehumidification at almost constant wet bulb temperature

None of these

Dehumidification with dry bulb temperature remaining constant

Cooling and dehumidification

Heating and dehumidification at almost constant wet bulb temperature

None of these

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Mass Transfer
The binary diffusivity in gases and liquids vary respectively as

T3/2 and √T

√T and T3/2

T and T3/2

T3/2 and T

T3/2 and √T

√T and T3/2

T and T3/2

T3/2 and T

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Mass Transfer
When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.

Temperature falls

Temperature rises

Pressure falls

Pressure rises

Temperature falls

Temperature rises

Pressure falls

Pressure rises

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Mass Transfer

Mass Transfer At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

Mass Transfer For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

Mass Transfer Pick out the wrong statement pertaining to the rotary dryer.

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 The binary diffusivity in gases and liquids vary respectively as

Mass Transfer When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.

Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

Mass Transfer
Pick out the wrong statement pertaining to the rotary dryer.

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
The binary diffusivity in gases and liquids vary respectively as

Mass Transfer
When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.