1. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

2. Who invented Piano ?

Answer:

Bartolomeo Cristofori

3. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

4. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

5. Who invented Computer ?

Answer:

Charles Babbage

6. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

7. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765