1. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

2. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

3. Who invented Helicopter ?

Answer:

Igor Sikorsky

4. Who invented Piano ?

Answer:

Bartolomeo Cristofori

5. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

6. Who invented Atomic Bomb ?

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

7. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.