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?
Nature of compounds TeO₂ and TeH₂ is___________ and ______________respectively.
Consider the following sequence of reactions : 
Molar mass of the product formed (A) is ______ g mol\(^{-1}\).
The magnitude of heat exchanged by a system for the given cyclic process ABC (as shown in the figure) is (in SI units):

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