1. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

2. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

3. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

4. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

5. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

6. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.