1. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

2. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

3. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

4. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

5. Who invented Super Computer ?

Answer:

Seymour Cray

6. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

7. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951