An example of hydracid is ________ .

Options

A. Hydrochloric acid
B. Sulphuric acid
C. Nitric acid
D. Acetic acid

Explanation

To determine an example of a hydro acid, we need to understand what a hydro acid is. A hydro acid is defined as an acid that contains hydrogen and a non-metal, but importantly, it should not contain oxygen. Let's analyze the given options step by step.

### Step 1: Understand the definition of hydro acid
A hydro acid is an acid that:
- Contains hydrogen (H)
- Contains a non-metal (not oxygen)

### Step 2: Analyze the options
We have four options to consider:
1. Hydrochloric acid (HCl)
2. Sulfuric acid (H₂SO₄)
3. Nitric acid (HNO₃)
4. Acetic acid (CH₃COOH)

### Step 3: Check each option
- **Hydrochloric acid (HCl)**:
- It contains hydrogen (H) and chlorine (Cl), which is a non-metal.
- There are no oxygen atoms present.
- Therefore, HCl is a hydro acid.

- **Sulfuric acid (H₂SO₄)**:
- It contains hydrogen (H) and sulfur (S), which is a non-metal, but it also contains oxygen (O).
- Since it contains oxygen, it is classified as an oxo acid, not a hydro acid.

- **Nitric acid (HNO₃)**:
- It contains hydrogen (H) and nitrogen (N), which is a non-metal, but it also contains oxygen (O).
- Thus, it is also classified as an oxo acid.

- **Acetic acid (CH₃COOH)**:
- It contains hydrogen (H) and carbon (C), which is a non-metal, but it also contains oxygen (O).
- Therefore, it is classified as an oxo acid as well.

### Step 4: Conclusion
After analyzing all the options, the only acid that fits the definition of a hydro acid is hydrochloric acid (HCl).

**Final Answer: An example of a hydro acid is hydrochloric acid (HCl).**

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