Which of the following is not a polymer?
Correct answer: A. Urea
- A. Urea
- B. Starch
- C. Polythene
- D. Natural rubber
Explanation
A polymer is a large molecule (macromolecule) composed of many repeating structural units called monomers. Urea (NH₂CONH₂) is a small, simple organic molecule and is not a polymer. The other options are all examples of polymers.
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Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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