Give examples to show that plastics are noncorrosive in nature.
Following examples show that plastics are non-corrosive in nature :
(i) They are used to store chemicals. For example cleansing chemical are very reacticve and store in plastic bottle.
(ii) They are used to store all types of food, as it does not react to materials stored in it.
(iii) It does not even react with air and water.
Rana wants to buy shirts for summer. Should he buy cotton shirts or
shirts made from synthetic material? Advise Rana, giving your reason.
Should the handle and bristles of a tooth brush be made of the same material? Explain your answer.
‘Avoid plastics as far as possible’. Comment on this advice.
Match the following of column I correctly with the phrases given in column II:
| A. Polyester | (i) Prepared by using wood pulp |
| B. Teflon | (ii) Used for making parachutes and stockings |
| C. Rayon | (iii) Used to make non-stick cookwares |
| D. Rayon | (iv) Fabrics do not wrinkle easily |
