1. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

2. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

3. Who invented Printing Press ?

Answer:

Johannes Gutenberg

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

6. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

7. Who invented DNA Structure ?

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