1. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

2. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

3. Who invented c language

Answer:

Dennis Ritchie

4. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

5. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

6. Who invented Radiocarbon ?

Answer:

Willard Libby

7. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932