1. Who invented Piano ?

Answer:

Bartolomeo Cristofori

2. Who invented c language

Answer:

Dennis Ritchie

3. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

4. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

5. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

6. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

7. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.