The balanced equation which shows the decomposition of hydrogen peroxide is:

Correct option is D

Correct Answer: 2H₂O₂ → 2H₂O + O₂

Explanation:
The decomposition of hydrogen peroxide (H₂O₂) is a chemical reaction where it breaks down into water (H₂O) and oxygen gas (O₂). The reaction is catalyzed by substances like manganese dioxide (MnO₂) or enzymes such as catalase in biological systems.

The balanced chemical equation is:

​$$2H_2O_2→2H_2O+O_2$$​​

This equation ensures the law of conservation of mass is followed, with an equal number of hydrogen and oxygen atoms on both sides of the equation.

Information Booster:

•  Decomposition of hydrogen peroxide is an example of a disproportionation reaction (oxygen acts as both oxidizing and reducing agent).
  
• The reaction releases oxygen gas, which is often tested by relighting a glowing splint.
  
• Catalysts like MnO₂ significantly speed up the reaction by lowering the activation energy.
  
•  Hydrogen peroxide is widely used as a disinfectant and bleaching agent.
  
•  In biological systems, the enzyme catalase protects cells from oxidative damage by decomposing hydrogen peroxide.