Chemical Process
The chamber process is

A batch process for directly producing high strength (98 to 100%) H₂SO₄
Non-catalytic and operates only on pyrites
None of these
Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums

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Chemical Process
Reverse osmosis is normally used for the

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

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