Rayon is not natural polymer. It is semi-synthetic, rest all are natural polymers.
So, the correct option is (D): Rayon.
| List II | List II |
|---|---|
| A. Elastomeric polymer | I. Urea formaldehyde resin |
| B. Fibre Polymer | II. Polystyrene |
| C. Thermosetting Polymer | III. Polyester |
| D. Thermoplastic Polymer | IV. Neoprene |
Polymers used for making toys are?
The effect of temperature on the spontaneity of reactions are represented as: Which of the following is correct?

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