1. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

2. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

3. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

4. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

5. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

6. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

7. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany