When a few drops of hydrogen peroxide are added to a living tissue such as liver or kidney, fizzing or foaming occurs immediately. Briefly explain the observation

Answer: Peroxides degrade to form oxygen gas, water and foam.

Explanation:

A foam forms when bubbles of a gas are trapped in a liquid or solid. In this case oxygen is generated when hydrogen peroxide breaks down into oxygen and water on contact with catalase, an enzyme found in liver or kidney.