1. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

2. Who invented Nylon ?

Answer:

Wallace Carothers

3. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

4. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

5. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

6. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.