1. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

2. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

3. Who invented Transformer ?

Answer:

Ottó Bláthy

4. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

5. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

6. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

7. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table