Chemical Process
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used

In hard water for cleaning of cloth
As a foam depressant in distillation column
As a rust preventive
As a lubricant

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Chemical Process
Enzymes are

Catalyst for temperature sensitive reactions
Proteins with high molecular weight (around 10, 000)
Derived from living organisms
All of these

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