1. Who invented Ball-Point Pen ?

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

2. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

3. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

4. Who invented c language

Answer:

Dennis Ritchie

5. Who invented Printing Press ?

Answer:

Johannes Gutenberg

6. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

7. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.