1. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

2. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

3. Who invented c language

Answer:

Dennis Ritchie

4. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

5. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

6. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

7. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644