1. Who invented Vitamin K ?

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

2. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

3. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

4. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

5. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

6. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.