1. Who invented Hydrogen bomb ?

Answer:

Edward Teller

2. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

3. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

4. Who invented DNA Structure ?

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

5. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

6. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

7. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.