1. Who invented Vitamin K ?

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

2. Who invented Proton ?

Answer:

Ernest Rutherford

3. Who invented Transistor ?

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

4. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

5. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

6. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

7. Who invented Calculus ?

Answer: Newton of Britain in 1670.