1. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

2. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

3. Who invented Submarine ?

Answer:

John Philip Holland

4. Who invented DNA Structure ?

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

5. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

6. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

7. Who invented Transistor ?

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