1. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

2. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

3. Who invented Vitamin D ?

Answer:

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

4. Who invented Radiocarbon ?

Answer:

Willard Libby

5. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

6. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

7. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951