Chemical Process
Polyvinyl chloride (PVC) is

Made by employing emulsion polymerisation
A condensation polymerisation product
None of these
A thermosetting material

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Chemical Process
Reverse osmosis is normally used for the

Purification of oxygen
Separation of helium from natural gas
Desalination of brackish water to produce potable (drinking) water
Separation of isotopes of uranium from gaseous uranium hexaflouride

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