1. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

2. Who invented Piano ?

Answer:

Bartolomeo Cristofori

3. Who invented Radiocarbon ?

Answer:

Willard Libby

4. Who invented Television ?

Answer:

John Logie Baird

5. Who invented Safety Pin ?

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

6. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

7. Who invented Stethoscope ?

Answer: Laennec of French in 1819.