PVC is obtained by polymerization ofSelect an answerACH2=CH-CH2ClBCH2=CH-ClCCH3-ClDCH3-CH2-Cl2

1. Break Down the Problem

To determine which of the given chemical structures can be polymerized to obtain PVC (Polyvinyl Chloride), we need to identify the monomer that, when polymerized, results in the formation of a polymer with the chemical structure corresponding to PVC.

2. Relevant Concepts

PVC is derived from the monomer vinyl chloride, which has the following structural formula:

$\text{CH}_2= \text{CH} - \text{Cl}$

This indicates two carbon atoms, a double bond between them, and a chlorine atom attached to one of the carbon atoms.

3. Analysis and Detail

The options provided are:

1. A. CH2=CH-CH2Cl: This structure includes an extra carbon and is not vinyl chloride.
2. B. CH2=CH-Cl: This is the correct structure of vinyl chloride.
3. C. CH3-Cl: This is simply chloromethane, which cannot polymerize to form PVC.
4. D. CH3-CH2-Cl2: This indicates a chlorinated ethane structure, which also cannot polymerize to form PVC.

4. Verify and Summarize

Among the options, only B (CH2=CH-Cl) represents vinyl chloride, the proper monomer for PVC. The polymerization of vinyl chloride via free radical polymerization leads to the formation of PVC, which is a widely used plastic.

Final Answer

The correct answer is B. CH2=CH-Cl.