1. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

2. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

3. Who invented Calculus ?

Answer: Newton of Britain in 1670.

4. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

5. Who invented Piano ?

Answer:

Bartolomeo Cristofori

6. Who invented Submarine ?

Answer:

John Philip Holland

7. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.