Chemical Process
Vulcanisation of rubber

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

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Chemical Process
Presence of sodium tripolyphosphate (an additive) in synthetic detergent

Does not allow redeposition of dirt on the cleaned surface
Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
None of these
Inhibits its corrosive effects

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