Question

Find the odd one out in the following. giving reasons.
(a) bakelite, teflon, formica, melamine
(b) rayon, nylon, polycot, acrylic
(c) dacron, acrylic, terene, terylene
(d) cotton, jute, silk, rayon
(e) polyester, cotton, ester, nylon

Answer 1

(a) The odd one is teflon. It is a thermoplastic, while bakelite, melamine and formica are thermosetting plastics.

(b) The odd one is polycot. It is a blended fabric, but rayon, nylon and acrylic are not.

(c) The odd one is acrylic. It is not a polyester synthetic fibre, while dacron, terene and terylene are polyester synthetic fibres that are manufactured from petroleum products.

(d) The odd one is rayon. It is a synthetic fibre, while cotton, jute and silk are natural fibres.

(e) The odd one is ester. It is a monomer (small molecule) unit, while polyester, cotton and nylon are polymers (larger molecules made up of smaller monomer units).