1. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

2. Who invented Calculus ?

Answer: Newton of Britain in 1670.

3. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

4. Who invented paper ?

Answer:

Cai Lun

5. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

6. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

7. Who invented Transformer ?

Answer:

Ottó Bláthy