1. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

2. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

3. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

4. Who invented Radiocarbon ?

Answer:

Willard Libby

5. Who invented Floppy disk ?

Answer: IBM in 1970

6. Who invented Java Language ?

Answer:

James Gosling

7. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932