No, not the gastric one.I am talking about one very skinny acidity!!While just observing a chemical experiment being done in our lab, I happened to touch the bottle of nitric acid and silver nitrate one after the another.And the result is in the snap below.A dark brown to black discoloration of skin



I don't really know, neither I bothered to know which among them really caused this but I am really bothered about what they have caused!!It responds to nothing and it seems I have to wait till these discolored cells are ex foliated!!



Apart from aesthetic inconvenience I am scared about the amount of nitrogenous substance which I m gonna ingest before the epithelium sheds!

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