1. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

2. Who invented Printing Press ?

Answer:

Johannes Gutenberg

3. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922

4. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

5. Who invented c language

Answer:

Dennis Ritchie

6. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

7. Who invented Floppy disk ?

Answer: IBM in 1970