Concept:Rayon is a regenerated semi-synthetic fiber produced by chemical solubilization and re-precipitation of naturally occurring cellulose derived from wood pulp or cotton linters.
Formula / Reaction:$$[\text{C}_6\text{H}_7\text{O}_2(\text{OH})_3]_n \xrightarrow{\text{NaOH, }\text{CS}_2} \text{Cellulose Xanthate} \xrightarrow{\text{H}_2\text{SO}_4} [\text{C}_6\text{H}_7\text{O}_2(\text{OH})_3]_n \quad (\text{Rayon Fiber})$$
Solution:- In the Viscose process, natural cellulose is treated with alkali and carbon disulfide to form a soluble xanthate, which is extruded through spinnerets into an acid bath to regenerate cellulose fibers.
Why other options are incorrect:- Acetyl chloride: An organic acylating reagent, not a polymer precursor for rayon.
- Ethylene and Acetylene: Petrochemical hydrocarbons used in purely synthetic polymers (e.g., polyethylene, polyacetylene).
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