1. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

2. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

3. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

4. Who invented google ?

Answer:

Larry Page

5. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

6. Who invented HIV ?

Answer:

7. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist