1. Who invented Vitamin K ?

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

2. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

3. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

4. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

5. Who invented Automatic rifle ?

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

6. Who invented Calculus ?

Answer: Newton of Britain in 1670.

7. Who invented Proton ?

Answer:

Ernest Rutherford