The polymer used as a substitute for wool is

The correct answer is Option (2) → Polyacrylonitrile

Polyacrylonitrile is made by the addition polymerisation of acrylonitrile, \( \ce{CH2=CHCN} \), in the presence of a peroxide catalyst:

    \( n\,\ce{CH2=CHCN} \rightarrow \ce{-[CH2-CH(CN)]_{n}-} \)

Its fibres are used as a substitute for wool.

Note: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.

NCERT (Pre-rationalised edition, 2022-23):
Polyacrylonitrile