1. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

2. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

3. Who invented Floppy disk ?

Answer: IBM in 1970

4. Who invented paper ?

Answer:

Cai Lun

5. Who invented Safety razor ?

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

6. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

7. Who invented Java Language ?

Answer:

James Gosling