Among the following, the total number of componds containing at least one `sp^(3)` hybridized carbon atom is//are-
Acetylene, dimethyl ether, propan-1-ol, ethane, 2- chlorobutane

Answer

To determine the total number of compounds containing at least one sp³ hybridized carbon atom from the given list (Acetylene, Dimethyl Ether, Propan-1-ol, Ethane, and 2-Chlorobutane), we will analyze each compound step by step.

### Step 1: Analyze Acetylene
- **Molecular Formula**: C₂H₂
- **Structure**: H-C≡C-H
- **Hybridization**: Each carbon in acetylene forms one sigma bond with hydrogen and one triple bond with the other carbon. Therefore, each carbon has 2 sigma bonds.
- **Conclusion**: Both carbons are sp hybridized (not sp³).

### Step 2: Analyze Dimethyl Ether
- **Molecular Formula**: CH₃OCH₃
- **Structure**: H₃C-O-CH₃
- **Hybridization**: Each carbon in dimethyl ether forms four sigma bonds (three with hydrogen and one with oxygen).
- **Conclusion**: Both carbons are sp³ hybridized.

### Step 3: Analyze Propan-1-ol
- **Molecular Formula**: C₃H₈O
- **Structure**: CH₃-CH₂-CH₂-OH
- **Hybridization**: Each carbon in propan-1-ol forms four sigma bonds (three with hydrogen and one with the next carbon or oxygen).
- **Conclusion**: All three carbons are sp³ hybridized.

### Step 4: Analyze Ethane
- **Molecular Formula**: C₂H₆
- **Structure**: H₃C-CH₃
- **Hybridization**: Each carbon forms four sigma bonds (three with hydrogen and one with the other carbon).
- **Conclusion**: Both carbons are sp³ hybridized.

### Step 5: Analyze 2-Chlorobutane
- **Molecular Formula**: C₄H₉Cl
- **Structure**: CH₃-CH(Cl)-CH₂-CH₃
- **Hybridization**: Each carbon forms four sigma bonds (three with hydrogen and one with the next carbon or chlorine).
- **Conclusion**: All four carbons are sp³ hybridized.

### Final Count
- **Compounds with at least one sp³ hybridized carbon**:
- Dimethyl Ether (2 sp³)
- Propan-1-ol (3 sp³)
- Ethane (2 sp³)
- 2-Chlorobutane (4 sp³)

Thus, the total number of compounds containing at least one sp³ hybridized carbon atom is **4** (Dimethyl Ether, Propan-1-ol, Ethane, and 2-Chlorobutane).

### Answer
**The total number of compounds containing at least one sp³ hybridized carbon atom is 4.**

---