One of the oxidants used with liquid propellant is :

Options

A. ammonia perchlorate
B. nitrocellulose
C. sulphuric acid
D. nitrogen tetraoxide (`N_(2)O_(4`)

Explanation

To solve the question regarding one of the oxidants used with liquid propellant, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Liquid Propellant**:
- Liquid propellants are typically composed of a fuel and an oxidizer. The oxidizer is essential for combustion, as it provides the oxygen needed for the fuel to burn.

2. **Identifying Common Oxidizers**:
- Common oxidizers used in liquid propellants include:
- Liquid Oxygen (LOX)
- Dinitrogen Tetroxide (N2O4)
- Nitric Acid (HNO3)

3. **Recognizing the Role of Oxidizers**:
- An oxidizer is a substance that can accept electrons from another substance during a chemical reaction. In the context of propellants, it facilitates the combustion of the fuel.

4. **Selecting an Oxidizer**:
- From the list of oxidizers identified, we can conclude that both Liquid Oxygen and Dinitrogen Tetroxide are widely used in various rocket propulsion systems.

5. **Conclusion**:
- Therefore, one of the oxidants used with liquid propellant is **Dinitrogen Tetroxide (N2O4)**.

### Final Answer:
The correct option for the question is **Dinitrogen Tetroxide (N2O4)**.

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