Methane may be obtained from monochloromethane by

Options

A. reduction with nascent hydrogen (Zn + HCl)
B. reduction with hydrogen `(H_(2))`
C. heating with sodium metal in dry ether
D. hydrolysis with aqueous NaOH.

Answer

To obtain methane from monochloromethane (CH3Cl), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Starting Material**:
- The starting material is monochloromethane, which has the chemical formula CH3Cl.

2. **Choose the Correct Reaction**:
- To convert CH3Cl to methane (CH4), we need to perform a reduction reaction.

3. **Select the Reducing Agent**:
- A suitable reducing agent for this reaction is nascent hydrogen, which can be generated using zinc (Zn) and hydrochloric acid (HCl).

4. **Write the Reaction**:
- The reaction can be represented as:
\[ \text{CH}_3\text{Cl} + \text{Zn} + \text{HCl} \rightarrow \text{CH}_4 + \text{HCl} \]
- To balance the equation, we multiply the entire reaction by 2:
\[ 2 \text{CH}_3\text{Cl} + \text{Zn} + 2 \text{HCl} \rightarrow 2 \text{CH}_4 + \text{HCl} \]

5. **Conclusion**:
- The correct method to obtain methane from monochloromethane is by reduction using nascent hydrogen produced from zinc and hydrochloric acid.

### Final Answer:
Methane may be obtained from monochloromethane by reduction with nascent hydrogen (Zn + HCl).