1. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

2. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

3. Who invented Atomic Bomb ?

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

4. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

5. Who invented Ball-Point Pen ?

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

6. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

7. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen