4. Give example W5. Explain why plastic containers are favoured for storing food.6. Explain the difference between thermoplastic and thermosetting plastics.7. Explain why the following are made of thermosetting plastics.(a) Saucepan handles(b) Electric plugs/switches/plug boards8. Categorise the materials of the following products into 'can be recycled'and cannot be recycled'.Telephone instruments, plastic toys, cooker handles, carry bags, ball pointpens, plastic bowls, plastic covering on electrical wires, plastic chairs,electrical switches.9. Rana wants to buy shirts for summer. Should he buy cotton shirts orshirts made from synthetic material? Advise Rana, giving your reason.10. Give examples to show that plastics are noncorrosive in nature.11. Should the handle and bristles of a tooth brush be made of the samematerial? Explain your answer.12. 'Avoid plastics as far as possible'. Comment on this advice.​