1. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

2. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

3. Who invented Vitamin D ?

Answer:

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

4. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

5. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

6. Who invented Helicopter ?

Answer:

Igor Sikorsky

7. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879