1. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

2. Who invented DNA Structure ?

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

3. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

4. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

5. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

6. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

7. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948