1. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

2. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

3. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

4. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

5. Who invented Safety Pin ?

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

6. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

7. Who invented Vitamin K ?

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