Which of the following is a chemical change?

Digestion of food in our body Ripening of fruits Fermentation of grapes All of these

All of these

The correct answer is option 4. All of these. A change in which one or more new substances are formed is called a chemical change. All new substances are formed as a result of chemical changes. For example, digestion of food in our body, ripening of fruits, fermentation of grapes, etc., happen due to series of chemical changes.