Terylene and nylon -6,6 are

Options

A. Random co-polymers
B. Alternating co-polymers
C. Block copolymers
D. Graft copolymers

Answer

To answer the question regarding Terylene and Nylon-6,6, we need to identify the category to which these two polymers belong.

### Step-by-Step Solution:

1. **Identify Terylene**:
- Terylene is a type of polyester. It is formed from the reaction between a diol (ethylene glycol) and a dicarboxylic acid (terephthalic acid). This polymerization process results in long chains of repeating ester units.

2. **Identify Nylon-6,6**:
- Nylon-6,6 is a type of polyamide. It is produced through the condensation polymerization of hexamethylenediamine and adipic acid. This process results in long chains of repeating amide units.

3. **Classification of Polymers**:
- Both Terylene and Nylon-6,6 are synthetic polymers. They are categorized based on the functional groups present in their repeating units:
- Terylene contains ester linkages (–COO–).
- Nylon-6,6 contains amide linkages (–CONH–).

4. **Conclusion**:
- Therefore, Terylene and Nylon-6,6 are both synthetic polymers but belong to different categories: Terylene is a polyester, while Nylon-6,6 is a polyamide.

### Final Answer:
Terylene is a polyester, and Nylon-6,6 is a polyamide.

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