1. Who invented Submarine ?

Answer:

John Philip Holland

2. Who invented Transistor ?

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

3. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

4. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

5. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

6. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

7. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.