Chemical Process
Phenol formaldehyde

Is an abrasive material
Employs condensation polymerisation
Is a monomer
Employs addition polymerisation

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Chemical Process
One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Adjust the pH of the syrup
Remove the coloring matter from the syrup
Improve the rate of crystallisation of sugar
Reduce the viscosity of the syrup

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