Melamine resin is obtained from melamine by reacting with

Options

A. `underset(OH)underset(|)(CH_(2))-underset(OH)underset(|)(CH_(2))`
B. `CH_(3)-CHO`
C. `CH_(3)-underset(O)underset(||)C-CH_(3)`
D. HCHO

Answer

To solve the question "Melamine resin is obtained from melamine by reacting with," we can follow these steps:

### Step-by-Step Solution:

1. **Identify Melamine Structure**:
- Melamine is a nitrogen-rich organic compound with the formula C3H6N6. It has a triazine ring structure, which consists of a six-membered ring containing three nitrogen atoms and three carbon atoms, with amino groups (NH2) attached.

2. **Recognize the Reactant**:
- The question asks what melamine reacts with to form melamine resin. The most common reactant used in the production of melamine resin is formaldehyde (HCHO).

3. **Reaction Mechanism**:
- When melamine reacts with formaldehyde, it forms a series of intermediates. The reaction typically involves the formation of methylene bridges (-CH2-) between the melamine molecules, leading to the development of a polymeric structure.

4. **Formation of Melamine Resin**:
- The reaction between melamine and formaldehyde leads to the formation of a cross-linked polymer known as melamine resin. This resin is characterized by its hardness and heat resistance, making it suitable for various applications, including unbreakable crockery.

5. **Conclusion**:
- Therefore, the correct answer to the question is that melamine resin is obtained from melamine by reacting with formaldehyde.

### Final Answer:
Melamine resin is obtained from melamine by reacting with **formaldehyde**.

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