1. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

2. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

3. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

4. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

5. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

6. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

7. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888