If formaldehyde and `KOH` are heated, then we get

Options

A. methane
B. methyl alcohol
C. ethyl formate
D. acetylene

Explanation

To determine the products formed when formaldehyde reacts with potassium hydroxide (KOH) upon heating, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this case are formaldehyde (HCHO) and potassium hydroxide (KOH).

2. **Understand the Reaction Type**:
- The reaction between formaldehyde and KOH is known as the Cannizzaro reaction. This reaction typically occurs with aldehydes that do not have alpha-hydrogens.

3. **Check for Alpha-Hydrogens**:
- Formaldehyde (HCHO) does not have any alpha-hydrogens (hydrogens on the carbon adjacent to the carbonyl group). This is important because Cannizzaro reactions occur when there are no alpha-hydrogens.

4. **Reaction Mechanism**:
- In the Cannizzaro reaction, one molecule of formaldehyde is oxidized to formic acid (HCOOK, the potassium salt of formic acid), while another molecule is reduced to methanol (CH3OH).

5. **Write the Products**:
- The products formed from this reaction are:
- Methyl alcohol (methanol, CH3OH)
- Potassium formate (HCOOK)

6. **Select the Correct Option**:
- Among the options given (Methane, Methyl alcohol, Ethyl formate, Acetylene), the correct product formed is Methyl alcohol.

### Final Answer:
The product obtained when formaldehyde and KOH are heated is **Methyl alcohol (CH3OH)**.

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