Pick the odd material out: [1 MARK]
Cotton, sponge, wool, iron
Iron is the odd one out since it is a hard material and the rest are soft.
Out of the following materials :
Cotton, Nylon, Terylene, Wool, PET, Acrylic
(a) Which materials are polyesters?
(b) Which material is a polyamide ?
(c) Which material is used as a substitute for wool ?
(d) Which material is used as a substitue for glass ?
Pick the odd one out. Give reason for the same. [1 MARK] nitrogen, oxygen, carbon dioxide.