Q18 of 29 Page 14

A bucket made of plastic does not rust like a bucket made of iron. Why?

Iron is a very reactive metal. Thus, it reacts with air and moisture present in the atmosphere and gets corroded easily – A brown coloured layer is developed on the surface. This does not happen in the case of plastics as it is non-reactive.


More from this chapter

All 29 →
16

Why is it not advisable to burn plastic and synthetic fabrics?

 17

Select the articles from the following list which are biodegradable.

(a) paper


(b) woolen clothes


(c) wood


(d) aluminium can


(e) plastic bag


(f) peels of vegetables

 19

Rohit took with him some nylon ropes, when he was going for rock climbing. Can you tell why he selected nylon ropes instead of ropes made of cotton or jute?

 20

A lady went to the market to buy a blanket. The shopkeeper showed her blankets made of acrylic fibres as well as made of wool. She preferred to buy an acrylic blanket. Can you guess why?