1. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

2. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

3. Who invented Floppy disk ?

Answer: IBM in 1970

4. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

5. Who invented Printing Press ?

Answer:

Johannes Gutenberg

6. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

7. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.