1. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

2. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

3. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

4. Who invented Printing Press ?

Answer:

Johannes Gutenberg

5. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

6. Who invented Proton ?

Answer:

Ernest Rutherford

7. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland