The starting material for the preparation of PVC is:
Correct answer: B. Acetylene
- A. Ethylene
- B. Acetylene
- C. Vinyl alcohol
- D. Methylene
Explanation
PVC is made by polymerising vinyl chloride, which is prepared by adding HCl to acetylene, so acetylene is the starting material in the classic route. Vinyl alcohol does not exist as a stable monomer, and ethylene is the usual tempting answer because it gives polyethene rather than PVC directly.
This question appeared on the UHS MDCAT 2026 paper, which you can sit online with every answer explained.
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About Polymers
Polymers are large molecules made from repeating monomer units joined by covalent bonds. The topic distinguishes addition polymers such as polyethylene, PVC and polystyrene from condensation polymers such as nylon and polyester, and relates chain structure to thermoplastics, thermosetting polymers, elastomers, properties, uses and environmental concerns.
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