The only natural thermoplastic resin, which is a product of animal life is ____________________?
Correct answer: B. Shellac
- A. Rosin
- B. Shellac
- C. Amber
- D. Copal
Explanation
Shellac is a natural thermoplastic resin secreted by the lac insect, so it is a product of animal life. Rosin comes from plants, while amber and copal are fossilized or hardened plant resins.
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