1. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

2. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

3. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

4. Who invented Ball-Point Pen ?

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

5. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

6. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

7. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832