1. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

2. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

3. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

4. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

5. Who invented Printing Press ?

Answer:

Johannes Gutenberg

6. Who invented DNA Structure ?

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

7. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765