1. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

2. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

3. Who invented Vitamin K ?

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

4. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

5. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

6. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

7. Who invented Submarine ?

Answer:

John Philip Holland