Chemical Process
Vulcanisation of rubber

Increases its oil & solvent resistance
Increases its ozone & oxygen reactivity
Converts its plasticity into elasticity
Decreases its tensile strength

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Chemical Process
Viscose rayon

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

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