Mass Transfer
Heat sensitive materials like certain pharmaceuticals and food stuffs can be dried in a/an __________ dryer.

None of these
Spray
Freeze
Indirect tray

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Mass Transfer
One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect

The product composition but not the fraction vaporised
Neither the product composition nor the fraction vaporised
The fraction vaporised but not the product composition
The product composition as well as the fraction vaporised

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