Multiple choice

The sour taste of lemons is due to

  1. acetic acid

  2. citric acid

  3. carbonic acid

  4. sulphuric acid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Citric acid is a weak organic acid found in citrus fruits. It is a natural preservative and is also used to add an acidic (sour) taste to food and soft drinks.It is acolorless translucent crystalline acid, with formula C6H8O7, principally derived by fermentation of carbohydrates or from lemon, lime and pineapple juice. 

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