1. Who invented Floppy disk ?

Answer: IBM in 1970

2. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

3. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

4. Who invented Proton ?

Answer:

Ernest Rutherford

5. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

6. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

7. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849