1. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

2. Who invented Submarine ?

Answer:

John Philip Holland

3. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

4. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

5. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

6. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

7. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.