inventors and invention
ssc preparation, important competetion questions, current affairs of india, latest question asked in competetion papers,
67. Who invented Chloroform as anaesthetic ?
James Simpson of Britain in 1847.68. Who invented Optical Fibre ?
Indian-born American physicist Narinder Kapany75. Who invented Microphone ?
Emile Berliner invented the first microphone in 1876.80. Who invented Nylon ?
Wallace Carothers
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