1. Who invented Printing Press ?

Answer:

Johannes Gutenberg

2. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

3. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

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 Steam Engine ?

Answer: Thomas Savery of Britain in 1698

7. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932