1. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

2. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

3. Who invented DNA Structure ?

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

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Printing Press ?

Answer:

Johannes Gutenberg

6. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.