1. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

2. Who invented Hydrogen bomb ?

Answer:

Edward Teller

3. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

4. Who invented Laser ?

Answer:

Charles H. Townes

5. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

6. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

7. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765