1. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

2. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

3. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

4. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

5. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

6. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

7. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.