Mass Transfer

1. Molality is defined as the number of gm moles of solute per _________ of solvent.

1. Litre
2. gm
3. Kg
4. m3

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2.'Absorption with chemical reaction' is involved in the removal of

1. Carbon dioxide from gaseous stream using alkaline solution
2. Benzol from coke oven gas using solar oil/wash oil
3. Ammonia from coke oven gas using refrigerated water
4. Tar from coke oven gas in primary gas coolers using chilled water

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3.'ADDUCTS' and 'CLATHRATES' are used in case of

1. Extractive distillation
2. Crystallisation
3. All of above
4. None of these

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4._________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

1. Packed
2. Bubble
3. Spray
4. Tray

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5._________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.

1. Wetted wall
2. Packed
3. Plate
4. Spray

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6._________ column is used in gas absorption process.

1. Wetted wall
2. Sieve/perforated tray
3. Bubble cap
4. Packed

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7._________ columns are used for liquid dispersion in a continuous gas phase.

1. Packed
2. Pulse
3. Bubble cap
4. Sieve plate

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8._________ developed the film theory.

1. Higbie
2. Fick
3. Ergun
4. Levenspiel

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9._________ diffusion is used for separating the isotopes of methane.

1. Thermal
2. Pressure
3. Force
4. None

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10._________ equation applies to diffusivities in liquids.

1. Gilliland
2. Hirschfelder
3. Wilke and Chang
4. None of these

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