1. Who invented Ball-Point Pen ?

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

2. Who invented c language

Answer:

Dennis Ritchie

3. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

4. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

5. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

6. Who invented X-ray ?

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

7. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948