Naturally occurring acids include -: 1. Acetic acid is found in vinegar
2. Citric acid is found in oranges and lemons
3. Oxalic acid is found in spinach
4. Ascorbic acid is found in amla (Indian gooseberries) and citrus fruits
5. Tartaric acid is found in grapes, tamarind, and apples.
6. Lactic acid is found in sour milk(curd).
Some of the learners also asked: Give examples of some acids.