1. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

2. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

3. Who invented Vitamin K ?

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

4. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

5. Who invented Laser ?

Answer:

Charles H. Townes

6. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

7. Who invented Automatic rifle ?

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