1. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

2. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

3. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

4. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

5. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

6. Who invented Java Language ?

Answer:

James Gosling

7. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683