1. Who invented Floppy disk ?

Answer: IBM in 1970

2. Who invented Piano ?

Answer:

Bartolomeo Cristofori

3. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

4. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

5. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

6. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

7. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683