The nails in bottles B rust a little, nails in A are the most rusted and that in C remain unchanged.
For rusting both water and oxygen are necessary. Both the factors are present in the bottle A since oxygen is dissolved in water.
In bottle B, water is boiled and hence dissolved air is removed. Due to lack of oxygen, iron nails do not rust much.
In bottle C, the layer of oil present prevents dissolving of atmospheric air in the water and hence no rusting occurs.
Rate this question :
Collect informatiNCERT Science
Prepare crystalsNCERT Science
Take three glassNCERT Science
A chemical changeNCERT - Exemplar Science
Match the items oNCERT - Exemplar Science
Give an example oNCERT - Exemplar Science
A student took aNCERT - Exemplar Science