Chemical Process
Viscose rayon

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

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Chemical Process
Vulcanisation of rubber

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

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