Check the incorrect statement :
(a) Acetic acid is present in sour milk
(b) Formic acid is present in insect bites
(c) Tartaric acid is present in grapes
(d) Citric acid is a tricarboxylic acid
(a) Acetic acid is present in sour milk
(b) Formic acid is present in insect bites
(c) Tartaric acid is present in grapes
(d) Citric acid is a tricarboxylic acid