1. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

2. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

3. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

4. Who invented Java Language ?

Answer:

James Gosling

5. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

6. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

7. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor