1. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

2. Who invented Laser ?

Answer:

Charles H. Townes

3. Who invented Proton ?

Answer:

Ernest Rutherford

4. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

5. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

6. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.