1. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

2. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

3. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

4. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

5. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

6. Who invented Java Language ?

Answer:

James Gosling

7. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765