Which one of the following is a saturated hydrocarbon?

Options

A. Propene
B. Propyne
C. Ethene
D. Butane

Answer

To determine which of the following is a saturated hydrocarbon, we need to understand the characteristics of saturated and unsaturated hydrocarbons.

### Step-by-Step Solution:

1. **Understand the Definition of Saturated Hydrocarbons**:
- Saturated hydrocarbons are organic compounds that contain only single bonds between carbon atoms. They are also known as alkanes.

2. **Identify the Types of Hydrocarbons**:
- Alkanes: These are saturated hydrocarbons with the general formula CnH2n+2. They contain only single bonds (sigma bonds).
- Alkenes: These are unsaturated hydrocarbons that contain at least one double bond (suffix "-ene").
- Alkynes: These are also unsaturated hydrocarbons that contain at least one triple bond (suffix "-yne").

3. **Analyze the Given Options**:
- Look at the names of the compounds provided in the question:
- Butane
- Ethene
- Propene
- Propane

4. **Determine Which Compound is Saturated**:
- Butane (C4H10): This is an alkane and contains only single bonds, making it a saturated hydrocarbon.
- Ethene (C2H4): This is an alkene and contains a double bond, making it unsaturated.
- Propene (C3H6): This is also an alkene and contains a double bond, making it unsaturated.
- Propane (C3H8): This is an alkane and contains only single bonds, making it a saturated hydrocarbon.

5. **Conclusion**:
- Among the options, both Butane and Propane are saturated hydrocarbons. However, if the question asks for only one answer, Butane is typically recognized as the saturated hydrocarbon due to its specific mention.

### Final Answer:
- **Butane** is a saturated hydrocarbon.