1. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

2. Who invented Printing Press ?

Answer:

Johannes Gutenberg

3. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

4. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

5. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

6. Who invented Calculus ?

Answer: Newton of Britain in 1670.

7. Who invented Vitamin K ?

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