1. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

2. Who invented Submarine ?

Answer:

John Philip Holland

3. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Television ?

Answer:

John Logie Baird

6. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

7. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945