1. Who invented paper ?

Answer:

Cai Lun

2. Who invented Floppy disk ?

Answer: IBM in 1970

3. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

4. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

5. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

6. Who invented Java Language ?

Answer:

James Gosling

7. Who invented Submarine ?

Answer:

John Philip Holland