1. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

2. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

3. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

4. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

5. Who invented Safety Pin ?

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

6. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

7. Who invented Proton ?

Answer:

Ernest Rutherford