Question

Take three glass bottles with wide mouths. Label them A, B and C. Fill about half

of bottle A with ordinary tap water. Fill bottle B with water which has been boiled

for several minutes, to the same level as in A. In bottle C, take the same boiled

water and of the same amount as in other bottles. In each bottle put a few similar

iron nails so that they are completely under water. Add a teaspoonful of cooking

oil to the water in bottle C so that it forms a film on its surface. Put the bottles

away for a few days. Take out nails from each bottle and observe them. Explain

your observations.​

Answer 1

Answer:

Explanation:

     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.

  hope this answer helps you

       plss mark me as brainliest