1. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

2. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

3. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

4. Who invented X-ray ?

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

5. Who invented Hydrogen bomb ?

Answer:

Edward Teller

6. Who invented Vitamin D ?

Answer:

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

7. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644