selected thermosetting synthetic adhesive from the following
a.. animal glue
b.. phenol formaldehyde resin
c.. protein
d.. Shellac resin
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selected thermosetting synthetic adhesive from the following
a.. animal glue
b.. phenol formaldehyde resin
c.. protein
d.. Shellac resin
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Explanation:
option B phenolformaldehyde resin
Explanation:
The term thermoset historically meant adhesives that cured or “set” on heating. The oldest type of this adhesive are the so-called PF, UF, and MF resins (phenol formaldehyde, urea formaldehyde, and melamine formaldehyde, respectively), which are commonly used to make plywood and are cured using heat and pressure.