Question

Write the observation on change of cut fruits and vegetables on keeping in air .​

Answer 1

Answer:

Fruit turns brown when exposed to air because a reaction is happening when a cut piece of fruit is exposed to oxygen. ... The chemical reaction can be simplified to: Polyphenol Oxidase + O2 → Melanin (Brown Color) Oxygen activates the compound polyphenol oxidase in the fruit to turn the fruit brown.