1. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

2. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

3. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

4. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

5. Who invented Hydrogen bomb ?

Answer:

Edward Teller

6. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

7. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913