1. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

2. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

3. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

4. Who invented Transformer ?

Answer:

Ottó Bláthy

5. Who invented Super Computer ?

Answer:

Seymour Cray

6. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

7. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.