Hydrogen peroxide is an important compound of hydrogen and oxygen. It shows various types of properties and chemical reactions.
The reaction `H_2 S + H_2 O_2 rarr S + 2 H_2 O` manifests.

Options

A. Acidic nature of `H_2 O_2`
B. Alkaline nature of `H_2 O_2`
C. Oxidising action of `H_2 O_2`
D. Reducing nature of `H_2 O_2`

Answer

To solve the question regarding the reaction of hydrogen peroxide with hydrogen sulfide, we will analyze the reaction step by step, focusing on the oxidation states of the elements involved.

### Step-by-Step Solution:

1. **Write the Reaction**:
The reaction given is:
\[ H_2S + H_2O_2 \rightarrow S + 2H_2O \]

2. **Assign Oxidation States**:
- In \(H_2S\), hydrogen (H) has an oxidation state of +1 and sulfur (S) has an oxidation state of -2.
- In \(H_2O_2\) (hydrogen peroxide), hydrogen (H) has an oxidation state of +1 and oxygen (O) has an oxidation state of -1 (since it is in the peroxide form).
- In the products, sulfur (S) is in its elemental form, so its oxidation state is 0. In water (\(H_2O\)), hydrogen (H) is +1 and oxygen (O) is -2.

3. **Identify Changes in Oxidation States**:
- For \(H_2S\):
- Sulfur changes from -2 to 0 (oxidation).
- For \(H_2O_2\):
- Oxygen changes from -1 to -2 (reduction).

4. **Determine Oxidation and Reduction**:
- Since sulfur in \(H_2S\) is oxidized (its oxidation state increases), it is losing electrons.
- Oxygen in \(H_2O_2\) is reduced (its oxidation state decreases), meaning it is gaining electrons.

5. **Identify the Role of Hydrogen Peroxide**:
- Since \(H_2O_2\) is causing the oxidation of \(H_2S\), it is acting as an oxidizing agent.

6. **Conclusion**:
The nature of hydrogen peroxide in this reaction is that it acts as an oxidizing agent.

### Final Answer:
The action shown by \(H_2O_2\) is oxidizing action.