A) natural silk
B) artificial silk
C) natural plastic or rubber
D) synthetic plastic
Correct Answer: B
Solution :
"Rayon" is man made fibre which consist of purified cellulose in the form of long threads. Rayon resembles silk in appearance. Hence, called as artificial silk. \[\underset{\begin{smallmatrix} \text{(from}\,\text{wood}\, \\ \text{pulp)} \end{smallmatrix}}{\mathop{\text{Cellulose}}}\,\,\,\xrightarrow[\text{C}{{\text{S}}_{\text{2}}}]{\text{NaOH}}\,\underset{\begin{smallmatrix} \text{(syrup}\,\text{loke} \\ \text{pulp)} \end{smallmatrix}}{\mathop{\text{Viscose}}}\,\] \[\xrightarrow[\begin{smallmatrix} spinnert\,\,\operatorname{int}o \\ dil.\,\,{{H}_{2}}S{{O}_{4}} \end{smallmatrix}]{Pass\,through}\,\,\,\underset{\begin{smallmatrix} (fine\,silk \\ thread) \end{smallmatrix}}{\mathop{Rayon}}\,\]
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