1. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

2. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

3. Who invented Laser ?

Answer:

Charles H. Townes

4. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

5. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

6. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

7. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table