1. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

2. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

3. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

4. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

5. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

6. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

7. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist