Chemical Process
Viscose rayon

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

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Chemical Process
Vulcanisation of rubber

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

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