1. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922

2. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

3. Who invented Hydrogen bomb ?

Answer:

Edward Teller

4. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

5. Who invented Java Language ?

Answer:

James Gosling

6. Who invented Piano ?

Answer:

Bartolomeo Cristofori

7. Who invented Printing Press ?

Answer:

Johannes Gutenberg