1. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

2. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

3. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

4. Who invented Ball-Point Pen ?

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

5. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

6. Who invented Radiocarbon ?

Answer:

Willard Libby

7. Who invented Atomic Bomb ?

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