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Match List-I and List-II.
| List-I | List-II |
|---|---|
| A. Elastomeric polymer | I. Urea formaldehyde resin |
| B. Fibre polymer | II. Polystyrene |
| C. Thermosetting polymer | III. Polyester |
| D. Thermoplastic polymer | IV. Neoprene |
Match the polymers with their correct classifications.
A. Elastomeric polymer — These are polymers with elastic properties (rubber-like). Neoprene (IV) is a well-known elastomer (synthetic rubber).
B. Fibre polymer — These have strong intermolecular forces and high tensile strength. Polyester (III) is a common fibre.
C. Thermosetting polymer — These form cross-linked structures and cannot be remoulded. Urea formaldehyde resin (I) is a thermosetting polymer.
D. Thermoplastic polymer — These can be repeatedly softened and moulded. Polystyrene (II) is a thermoplastic polymer.
A → IV (Neoprene), B → III (Polyester), C → I (Urea formaldehyde resin), D → II (Polystyrene). The correct answer is Option C: A-IV, B-III, C-I, D-II.
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