The answer is ii) the liquid called tea.
That is ii) the liquid called tea is a mixture.
the liquid called tea is a homogeneous mixture that contains organic and inorganic compounds, sugar(organic carbohydrate),tea leaf extract(organic), water(inorganic).
Whereas (iii) distilled water, is a pure substance while (I) gello is a colloid.
Oxidation refers to a change in electrons (In this case, loss of electrons). It has no impact on the number of neutrons, or for that matter on any sub-atomic particles in the nucleus. So the number of neutrons (3) remains the same
