What is the degree of polymerization (DP)?
Correct answer: C. The number of repeating units in the chain
- A. The total molecular mass of the polymer
- B. The number of monomers in the polymer
- C. The number of repeating units in the chain
- D. The molecular mass of a single monomer
Explanation
The correct answer is Option C: The degree of polymerization (DP) refers to the number of repeating units in a polymer chain. It is an important parameter that determines the molecular weight and properties of the polymer. Option A is incorrect because it describes the total molecular mass, not the count of repeating units. Option B is misleading as it mentions 'monomers', which are the initial building blocks, but DP specifically counts the repeating units formed after polymerization. Option D refers to the molecular mass of one monomer, which is unrelated to the concept of DP.
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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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