1. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

2. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

3. Who invented Hydrogen bomb ?

Answer:

Edward Teller

4. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

5. Who invented Laser ?

Answer:

Charles H. Townes

6. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.