1. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

2. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

3. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

4. Who invented Laser ?

Answer:

Charles H. Townes

5. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

6. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

7. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin