1. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

2. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

3. Who invented Radiocarbon ?

Answer:

Willard Libby

4. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

5. Who invented Hydrogen bomb ?

Answer:

Edward Teller

6. Who invented Floppy disk ?

Answer: IBM in 1970

7. Who invented Computer ?

Answer:

Charles Babbage