Polyethylene is

Options

A. Random copolymers
B. Homopolymer
C. Alternate copolymer
D. Cross linked copolymer

Answer

To determine what type of polymer polyethylene (polythene) is, we can follow these steps:

### Step 1: Understand the Structure of Polyethylene
Polyethylene is formed from the monomer ethene (CH2=CH2). The polymerization process involves the addition of these monomer units to form long chains.

### Step 2: Identify the Type of Polymerization
Polyethylene is produced through addition polymerization, where the double bond in ethene opens up and links with other ethene molecules, creating a long chain.

### Step 3: Determine the Repeating Unit
In polyethylene, the repeating unit is the same as the monomer, which is the ethene unit (–CH2–CH2–). This indicates that all the repeating units are identical.

### Step 4: Classify the Polymer
Since polyethylene consists of only one type of monomer (ethene), it is classified as a homopolymer. Homopolymers are made from a single type of repeating unit.

### Step 5: Eliminate Other Options
- **Random polymer**: This would involve different types of monomers linked together randomly, which is not the case for polyethylene.
- **Alternate polymer**: This involves two different types of monomers alternating in the chain, which does not apply to polyethylene.
- **Cross-linked polymer**: This type involves covalent bonds between different polymer chains, which does not describe polyethylene.

### Conclusion
Based on the analysis, polyethylene is classified as a **homopolymer**.

### Final Answer
**Polyethylene is a homopolymer.**

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