Multiple choice

We call rayon as regenerated fibre because to prepare this fibre _____.

  1. cellulose is regenerated by first dissolving it in NaOH and then in CS2

  2. cellulose is degenerated by first dissolving it in NaOH and then in CS2

  3. cellulose is regenerated by first dissolving it in CS2 and then in NaOH

  4. cellulose is degenerated by first dissolving it in CS2 and then in NaOH
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A Correct answer
Explanation

Rayon is prepared by treating cellulose with sodium hydroxide (NaOH) and then with carbon disulphide (CS2). This process is called regeneration of cellulose. That is why rayon is known as regenerated fibre.

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