Chemical Process
Black liquor is converted into white liquor by

Selective liquid extraction
Extractive distillation
Multi-effect evaporation only
Evaporation and burning the concentrate followed by causticisation of products

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Chemical Process
Viscose rayon

Utilises H₂SO₄, NaOH and CS₂ during its manufacture
Cannot yield textile grade fibre
None of these
Cannot be made from sulphite pulp

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