CBSE Class 7 Science
Question 4 of 8
The Ever Evolving World of Science — Question 4
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Question Why are some fruits sour? (Page 2)
Some fruits are sour because they contain acids like citric acid. The acid content and ripeness affect how sour they taste. For example, lemons are sour due to high citric acid, while other fruits like green mangoes become sweeter as they ripen.