ssc preparation, important competetion questions, current affairs of india, latest question asked in competetion papers,
48. Who invented Neon Lamp ?
Georges Claude who was a French engineer, chemist and inventor51. Who invented Transistor ?
Bardeen, Shockley & Britain of U.S.A. in 194860. Who invented Stethoscope ?
Laennec of French in 1819.
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