1. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

2. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

3. Who invented Computer ?

Answer:

Charles Babbage

4. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

5. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

6. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

7. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen