1. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

2. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

3. Who invented DNA Structure ?

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

4. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

5. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

6. Who invented Computer ?

Answer:

Charles Babbage

7. Who invented Floppy disk ?

Answer: IBM in 1970