Hydrogen sulphide, on combustion, gives sulphur and water. This reaction indicates the ______ of hydrogen sulphide.

Options

A. acidic nature
B. basic nature
C. reducing property
D. oxidizing property

Explanation

To solve the question regarding the combustion of hydrogen sulfide (H₂S) and what it indicates about the substance, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Reaction**:
The question states that hydrogen sulfide, when combusted, produces sulfur and water. The general reaction can be represented as:
\[ 2H_2S + 3O_2 \rightarrow 2S + 2H_2O \]
This shows that hydrogen sulfide reacts with oxygen to produce sulfur and water.

**Hint**: Look for the products formed during the combustion reaction.

2. **Identify the Type of Reaction**:
The combustion of hydrogen sulfide involves the reaction with oxygen, which is a characteristic of combustion reactions. In combustion, substances typically undergo oxidation.

**Hint**: Recall that combustion reactions usually involve a reactant combining with oxygen.

3. **Determine Oxidation and Reduction**:
In this reaction, hydrogen sulfide (H₂S) loses hydrogen (which can be seen as oxidation), while oxygen is being reduced. The removal of hydrogen from H₂S indicates that it is undergoing oxidation.

**Hint**: Remember that oxidation involves the loss of electrons or hydrogen, while reduction involves the gain of electrons or hydrogen.

4. **Conclude the Property of H₂S**:
Since hydrogen sulfide is losing hydrogen during the reaction, it is acting as a reducing agent. Therefore, the combustion of hydrogen sulfide indicates its reducing property.

**Hint**: Think about how substances can act as reducing agents by donating electrons or hydrogen.

### Final Answer:
The combustion of hydrogen sulfide indicates the **reducing property** of hydrogen sulfide.