1. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

2. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

3. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

4. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

5. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

6. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

7. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.