Define thermoplastics and thermosetting polymers with two examples of each.

Answer

Thermosetting polymers on the other hand are permanently settiing polymers On heating in a mould they get hardened and set and cannot be softened again This hardening on heating is due to cross-linking between different polymer chains to give a three-dimensional betwork solid For example bakelite melarnine formaldehyde polymer etc .

Explanation

(A) Starch is hydrolysed by the enzyme diastase (also called `beta-` amylase) to maltose.