Question

1. What are macromolecules? How are they formed?
2. What are thermoplastic and thermosetting polymers?
3. Name any two methods of determination of molar mass of polymers.
4. Define addition polymerization with example.
5. Define condensation polymerization and give one example.
6. Define number-average molecular weight of polymer.
7. What is meant by weight-average molecular weight of polymer?
3. What is meant by scattering of light? Why polymer solutions scatter the light?
. Name any four electronically conducted polymers.​

Answer 1

Answer:

1 Most macromolecules are made from single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts.

2.A thermoplastic polymer can be repeatedly softened on heating and hardened on cooling. Hence, it can be used again and again. The examples are polythene, polypropylene, etc. A thermosetting polymer is a permanent setting polymer as it gets hardened and sets during moulding process and cannot be softened again