Chloroform can be obtained from:

Options

A. Methanol
B. Methanal
C. Propanol- 1
D. Propanol-2

Answer

To determine from which compound chloroform can be obtained, we will analyze the options provided: methanol, methanol (again), propanol 1, and propanol 2.

### Step-by-Step Solution:

1. **Identify the Structure of Chloroform**:
Chloroform has the chemical formula CHCl3. To synthesize chloroform, we need a precursor that can provide the necessary carbon and functional groups.

2. **Analyze the Options**:
- **Option A: Methanol (CH3OH)**:
- Methanol has only one carbon atom. It cannot be converted to chloroform because it lacks the necessary carbon backbone.
- **Option B: Methanol (HCHO)**:
- This is formaldehyde, which also has only one carbon atom. Like methanol, it cannot be converted to chloroform.
- **Option C: Propanol 1 (CH3CH2CH2OH)**:
- Propanol 1 has three carbon atoms. However, the alcohol group (OH) is attached to a carbon that is connected to two other carbon atoms. This does not meet the criteria for conversion to chloroform.
- **Option D: Propanol 2 (CH3CHOHCH3)**:
- Propanol 2 has three carbon atoms, and the alcohol group is attached to a carbon that is connected to only one other carbon atom. This structure meets the criteria for conversion to chloroform.

3. **Conversion Process**:
- Propanol 2 can undergo a series of reactions:
- It reacts with bleaching powder (Ca(OCl)2) and undergoes hydrolysis to produce chlorine (Cl2).
- The chlorine can then react with propanol 2 to form a ketone (CH3C(=O)CH3) and HCl.
- The ketone can undergo further chlorination to form a trichloro compound.
- Finally, this compound can be treated to produce chloroform (CHCl3).

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option D: Propanol 2**.