1. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

2. Who invented colour television ?

Answer:

Peter Carl Goldmark

3. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

4. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

5. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

6. Who invented Nylon ?

Answer:

Wallace Carothers

7. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628