1. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

2. Who invented Piano ?

Answer:

Bartolomeo Cristofori

3. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

4. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

5. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

6. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

7. Who invented Radiocarbon ?

Answer:

Willard Libby