1. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

2. Who invented Radiocarbon ?

Answer:

Willard Libby

3. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

4. Who invented Automatic rifle ?

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

5. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

6. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

7. Who invented HIV ?

Answer: