1. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

2. Who invented Computer ?

Answer:

Charles Babbage

3. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

4. Who invented Transformer ?

Answer:

Ottó Bláthy

5. Who invented Laser ?

Answer:

Charles H. Townes

6. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

7. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628