1. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

2. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

3. Who invented X-ray ?

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

4. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

5. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

6. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

7. Who invented Transformer ?

Answer:

Ottó Bláthy