Which of the following acids is in sour milk? A. glycolic acid B. lactic acid C. citric acid D. tartaric acid

glycolic acid
lactic acid
citric acid
tartaric acid

The correct answer is B. lactic acid.

Lactic acid is a type of organic acid that is produced when bacteria break down lactose in milk. It is responsible for the sour taste of sour milk.

Glycolic acid is a type of alpha hydroxy acid that is used in skin care products. It is not found in sour milk.

Citric acid is a type of carboxylic acid that is found in citrus fruits. It is not found in sour milk.

Tartaric acid is a type of dicarboxylic acid that is found in grapes and wine. It is not found in sour milk.

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