1. Who invented Ball-Point Pen ?

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

2. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

3. Who invented Java Language ?

Answer:

James Gosling

4. Who invented Hydrogen bomb ?

Answer:

Edward Teller

5. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

6. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

7. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.