Bakelite is a cross – linked polymer of formaldehyde and:

Options

A. Dacron
B. Buna - S
C. Novolac
D. PHBV

Answer

To solve the question regarding Bakelite, we will follow these steps:

### Step 1: Understanding Bakelite
Bakelite is a type of plastic known as a thermosetting polymer. It is formed through the polymerization of phenol and formaldehyde.

### Step 2: Identifying the Components
The question states that Bakelite is a cross-linked polymer of formaldehyde and asks for the other component. We know that Bakelite is specifically made from phenol and formaldehyde.

### Step 3: Reaction Process
The reaction between phenol and formaldehyde occurs in the presence of an acid catalyst (H+). This leads to the formation of a polymer known as Novolac, which is a linear polymer.

### Step 4: Cross-linking to Form Bakelite
When Novolac is further reacted with excess formaldehyde, cross-linking occurs, resulting in the formation of Bakelite. This cross-linking is what gives Bakelite its thermosetting properties.

### Step 5: Conclusion
Thus, the other component that Bakelite is a cross-linked polymer of formaldehyde with is **Novolac**.

### Final Answer
Bakelite is a cross-linked polymer of formaldehyde and **Novolac**.

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