1. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

2. Who invented Computer ?

Answer:

Charles Babbage

3. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

4. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

5. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

6. Who invented Calculus ?

Answer: Newton of Britain in 1670.

7. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.