Write the name of starting materials used for the synthesis of following polymer and identify its monomer unit.
Novolac is prepared from phenol (C6H5OH) and formaldehyde (HCHO). It is thus known as phenol-formaldehyde resin commonly as Bakelite. Novolac on heating with formaldehyde (HCHO) undergoes cross linking to form an infusible mass called bakelite.
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