1. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

2. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

3. Who invented Piano ?

Answer:

Bartolomeo Cristofori

4. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

5. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

6. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

7. Who invented Floppy disk ?

Answer: IBM in 1970