Mass Transfer
When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.

Steam
Azerotropic
Continuous
None of these

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Mass Transfer
Use of raschig rings in place of crushed stones as packing in packed beds (other things being same)

Decreases pressure drop, increases surface area
Decreases pressure drop, decreases surface area
Increases pressure drop, increases surface area
Increases pressure drop, decreases surface area

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