1. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

2. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

3. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

4. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

5. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

6. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

7. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.