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Mass Transfer

Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

-0.6
1.5
0.6
-1.5

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Mass Transfer
Prandtl number for water at 20°C is about

7
150
0.7
70

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Mass Transfer
Use of packed towers for distillation is generally limited to the

Vacuum distillation
High pressure operation
Multicomponent distillation
Small sizes

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Mass Transfer
Large scale drying of sugar is done in a __________ dryer.

Truck
Rotary
Spouted bed
Tray

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Mass Transfer
If the amount of the steam used in steam distillation is increased, the temperature of distillation

Remains unchanged
Depends on relative volatility
Increases
Decreases

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Mass Transfer
Raschig ring made of procelain cannot be used for treating concentrated

Nitric acid
Alkalis
Sulphuric acid
Hydrochloric acid

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