1. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

2. Who invented Television ?

Answer:

John Logie Baird

3. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

4. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

5. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

6. Who invented Transistor ?

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

7. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.