1. Who invented Automatic rifle ?

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

2. Who invented Java Language ?

Answer:

James Gosling

3. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

4. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

5. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

6. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

7. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm