Who invented PVC (Poly Vinyl Chloride)
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Vladimir Zworykin
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Waldo Semon
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Sir David Brewster
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Edwin Perkins
B
Correct answer
Explanation
Waldo Semon invented PVC (Polyvinyl Chloride) in 1926 while working at B.F. Goodrich Company. He was trying to create a synthetic rubber substitute when he accidentally discovered PVC. The material became widely used in construction, plumbing, and consumer goods. The other names (Zworykin, Brewster, Perkins) were inventors in electronics and other fields.