Q. Which of the following acids are responsible for imparting sour taste to fruits or milk products?

1. Citric acid
2. Lactic acid
3. Acetic acid

Select the correct option from the codes given below:
Answer: 1, 2 & 3
Notes: Citric acid provides sourness in citrus fruits. Lactic acid causes the sour taste in curdled milk and some fermented foods. Acetic acid gives vinegar its sour characteristic. Thus, all three acids are responsible for imparting sourness to different fruits or milk products found in nature.