Rana wants to buy shirts for summer. Should he buy cotton shirts or
shirts made from synthetic material? Advise Rana, giving your reason.
1) Cotton clothes are preferred to synthetic clothes in summers because cotton allows better air circulation, which helps in absorbing and removing body moisture caused by sweat. It therefore minimizes fungal breeding by keeping your body dry and cool.
2) Cotton is light in weight and in colour unless it is dyed. being light coloured will help the light to pass through instead of being absorbed and hence we will not feel the heat as much.
Give examples to show that plastics are noncorrosive in nature.
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 |
