1. Who invented Ball-Point Pen ?

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

2. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

3. Who invented Computer ?

Answer:

Charles Babbage

4. Who invented colour television ?

Answer:

Peter Carl Goldmark

5. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

6. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

7. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.