Mass Transfer

201.HETP is numerically equal to HTU, only when the operating line

1. Lies below the equilibrium line
2. Lies above the equilibrium line
3. And equilibrium lines are parallel
4. Is far from the equilibrium line

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202.High pressure at the bottom of a distillation tower handling heat sensitive materials results in

1. Thermal decomposition of bottoms
2. Increased relative volatility
3. Erosion of the tower
4. Very efficient operation

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203.Humid volume is the total volume in m3 of 1 kg of

1. Vapour laden gas at 1 atm. and room temperature
2. Gas plus its accompanying vapour at 1 atm. and room temperature
3. Gas plus its accompanying vapour at 1 atm. and gas temperature
4. Vapour laden gas at 1 atm. and gas temperature

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204.Humid volume, at a given temperature is a/an _________ function of humidity.

1. Inverse
2. Exponential
3. Linear
4. Logarithmic

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205.Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

1. Insoluble in the liquid
2. Soluble in the liquid
3. Non-ideal in nature
4. At a fixed temperature

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206.Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of _________ humidity.

1. Molal
2. Relative
3. Percentage
4. None of these

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207.Hydrogenation of oil is carried out in a/an _________ in Vanaspati manufacturing plant.

1. Agitated vessel
2. Sieve tray column
3. Bubble cap column
4. Packed tower

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208.Hypersorption refers to a _________ process.

1. Fixed bed absorption
2. Moving bed absorption
3. Fixed bed adsorption
4. Moving bed adsorption

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209.If 'ƒ' is defined as above, then which of the following applies to a feed at dew point?

1. ƒ = 1
2. ƒ < 1
3. ƒ > 1
4. 0 < f < 1

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210.If a two phase system is in physical equilibrium; then it means that, the

1. Escaping tendency of each component from the liquid phase to the vapor phase is exactly equal to that from vapor phase to liquid phase
2. Temperature of the liquid phase is equal to that of the vapor phase
3. Total pressure throughout the liquid phase is equal to that throughout the vapor phase
4. All (A), (B) and (C)

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