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  1. Sour taste of lemon is due to the presence of which of the following ?

  2. A.

     Citric acid

    B.

     Acetic acid

    C.

     Oxalic acid

    D.

     Formic acid

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    Answer : Option A

    Explanation :

    Lemon juice is about 5% citric acid, which gives lemons a sour taste and a pH of 2 to 3. Citric acid is found in many fruits but lemon contains large quantity of citric acid. The distinctive sour taste of lemon juice makes it a key ingredient in drinks and foods such as lemonade and lemon meringue pie.


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