Lick them. If they taste sour , they contain acid. You can also use litmus paper-- red means acidic.
Mainly most fruits contain acid but the most likely is probably citrus fruits like oranges and limes
Most fruits contain citric acid. The amount of citric acid in apples and pears is significantly lower than that of citrus fruits like oranges and lemons.
Orange
citric acid is in alot of fruits
Fruits like oranges, lemons, limes, grapefruit, etc. do. yes, dry fruits also contain acid
Yes, fruits contain acid.
Foods that contain citric acid are lemons and oranges. They are contain vitamic C.
Citrus fruits contain both citric acid and ascorbic acid.
because they come from citrus trees, & contain citric acid.
yes it does
Yeah, citric acid for one.
Grapes are one of the rare fruits that contain tartaric acid. It is present as free acid and a salt, such as potassium bitartrate.