1. Who invented Vitamin D ?

Answer:

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

2. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

3. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

4. Who invented Calculus ?

Answer: Newton of Britain in 1670.

5. Who invented Helicopter ?

Answer:

Igor Sikorsky

6. Who invented c language

Answer:

Dennis Ritchie

7. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885