Chemical Process
Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

Irreversible
Exothermic
Both B and C
Endothermic

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Chemical Process
Viscose rayon

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

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