Question : Who invented the waterproof raincoat?
Option 1: Robert Hooke
Option 2: Cai Lun
Option 3: Charles Macintosh
Option 4: William Harvey
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Correct Answer: Charles Macintosh
Solution : The correct option is Charles Macintosh
Charles Macintosh invented the waterproof raincoat. He was a Scottish chemist who bonded two pieces of cloth together to create waterproof garments using coal tar naphtha. He created a trilayer fabric, with rubber constituting the centre layer and normal cloth for the first and last layers.
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