1. Who invented Hydrogen bomb ?

Answer:

Edward Teller

2. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

3. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

4. Who invented Atomic Bomb ?

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

5. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

6. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

7. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902