1. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

2. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

3. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

4. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

5. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

6. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

7. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen