Monomer of `[{:(" "CH_(3)),(" |"),(--CH_(2)-C--),(" |"),(" "COOCH_(3)):}]_(n)` is

Options

A. Methyl methacrylate
B. Styrene
C. Propylene
D. Ethene

Answer

To determine the monomer of the given polymer structure, we need to analyze the structure provided in the question. The polymer is represented as:

`[CH3 | --CH2-C-- | COOCH3]_(n)`

### Step-by-Step Solution:

1. **Identify the Structure**:
The polymer has a repeating unit that includes a carbon backbone with a methoxy (OCH3) group attached to a carbonyl (C=O) group. The structure suggests that it is derived from a methacrylate.

2. **Recognize the Functional Groups**:
The presence of the COOCH3 group indicates that the polymer is likely formed from a methacrylate monomer. The methoxy group (OCH3) is characteristic of methyl methacrylate.

3. **Write the Structure of the Monomer**:
The monomer that corresponds to the given polymer structure can be deduced as follows:
- The double bond in the polymer indicates that it is derived from a compound with a double bond.
- The structure can be identified as methyl methacrylate, which has the formula:
\[ CH2=C(CH3)COOCH3 \]

4. **Confirm the Monomer**:
To confirm, we can visualize the polymerization process:
- When methyl methacrylate undergoes polymerization, the double bond opens up, allowing the formation of long chains with repeating units of the original monomer.
- The repeating unit in the polymer will be derived from the monomer structure.

5. **Final Answer**:
Therefore, the monomer of the given polymer is **Methyl Methacrylate (MMA)**.