1. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

2. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

3. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

4. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

5. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

6. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

7. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683