SSC General Science & Technology Sample Paper NCERT Sample Paper-7

  • question_answer
    Milk tastes sour when kept in the open for some time due to formation of

    A)  Malic acid        

    B)  citric acid

    C)  Lactic acid       

    D)  carbonic acid

    Correct Answer: C

    Solution :

    [c] Lactic acid is a carboxylic acid, formed in the metabolism of many bacteria. In milk, lactose is converted into lactic acid by metabolic activities of bacteria. Lactic acid gives sour taste to milk.

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