Question

state the conditions under which the iron articles get rusted.design an activity to investigate the conditions necessary for rusting.suggest any two methods to prevent rusting of iron

Answer 1

the 2 conditions are-
1-Pesence of air
2-Presence of moisture
You can use 3 test-tube exp
put only air and iron in 1,water and oil (to stop air) in 2(with iron),3-water,air,iron
only in 3 it will get rusted
The 2 methods are-
a)Painting the surface
b)Galvanisation-Putting zinc over the iron