1. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

2. Who invented Submarine ?

Answer:

John Philip Holland

3. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

4. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

5. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

6. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

7. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.