1. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

2. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

3. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

4. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

5. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

6. Who invented Printing Press ?

Answer:

Johannes Gutenberg

7. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.