1. Who invented Vitamin D ?

Answer:

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

2. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

3. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

4. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

5. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

6. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

7. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor