1. Who invented Printing Press ?

Answer:

Johannes Gutenberg

2. Who invented Hydrogen bomb ?

Answer:

Edward Teller

3. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

6. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

7. Who invented c language

Answer:

Dennis Ritchie