1. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

2. Who invented Radiocarbon ?

Answer:

Willard Libby

3. Who invented Proton ?

Answer:

Ernest Rutherford

4. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

5. Who invented paper ?

Answer:

Cai Lun

6. Who invented X-ray ?

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

7. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888