Arrange the following polymers in increasing order of their intermolecular forces.
(i) (Nylon-6, 6, Buna-S, Polythene.
(ii) Nylon-6, Neoprene, Polyvinyl chloride.

Explanation

To arrange the given polymers in increasing order of their intermolecular forces, we need to understand the nature of each polymer and the strength of intermolecular forces associated with them.

### Step-by-Step Solution:

**Step 1: Identify the Types of Polymers**
- **Nylon-6,6**: This is a type of polyamide and is known for its strong intermolecular forces due to hydrogen bonding between the amide groups. It is classified as a fiber.
- **Buna-S**: This is a synthetic rubber (an elastomer) and has weaker intermolecular forces compared to fibers due to its rubbery nature.
- **Polythene (Polyethylene)**: This is a plastic with relatively weak van der Waals forces between the polymer chains.
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