1. Who invented X-ray ?

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

2. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

3. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

4. Who invented Piano ?

Answer:

Bartolomeo Cristofori

5. Who invented Vitamin D ?

Answer:

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

6. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

7. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland