1. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

2. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

3. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

4. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

5. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

6. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

7. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.