1. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

2. Who invented Laser ?

Answer:

Charles H. Townes

3. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

4. Who invented Submarine ?

Answer:

John Philip Holland

5. Who invented Java Language ?

Answer:

James Gosling

6. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

7. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798