1. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

2. Who invented Safety razor ?

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

3. Who invented Floppy disk ?

Answer: IBM in 1970

4. Who invented Java Language ?

Answer:

James Gosling

5. Who invented colour television ?

Answer:

Peter Carl Goldmark

6. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

7. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.