1. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

2. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

3. Who invented Piano ?

Answer:

Bartolomeo Cristofori

4. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

5. Who invented c language

Answer:

Dennis Ritchie

6. Who invented Calculus ?

Answer: Newton of Britain in 1670.

7. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798