1. Who invented X-ray ?

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

2. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

3. Who invented Laser ?

Answer:

Charles H. Townes

4. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

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 Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.