Which one of the polymer is bakelite?

Options

A. Addition polymer
B. Homopolymer
C. Biopolymer
D. Condensation polymers

Explanation

To determine which polymer is Bakelite, we can follow these steps:

### Step 1: Identify Bakelite
Bakelite is a type of polymer that is classified as a thermosetting plastic. It is formed from the polymerization of phenol and formaldehyde.

### Step 2: Understand the Monomers
- **Phenol**: This is an aromatic compound with the formula C6H5OH. It consists of a benzene ring (C6H5) with a hydroxyl group (-OH) attached.
- **Formaldehyde**: This is a simple aldehyde with the formula CH2O.

### Step 3: Polymerization Process
The polymerization of phenol and formaldehyde occurs through a condensation reaction, where water is released as a by-product. The reaction can be summarized as follows:
- When phenol reacts with formaldehyde, they undergo a series of reactions that lead to the formation of Bakelite, releasing water in the process.

### Step 4: Characteristics of Bakelite
- Bakelite is a cross-linked polymer, meaning that the polymer chains are interconnected, which gives it its strength and heat resistance.
- It has low electrical conductivity, making it an excellent insulator.
- Bakelite is used in various applications, including electrical switches and household items, due to its durability and heat resistance.

### Step 5: Conclusion
Based on the above information, we conclude that Bakelite is a condensation polymer made from phenol and formaldehyde, and it is characterized as a thermosetting plastic.