1. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

2. Who invented Submarine ?

Answer:

John Philip Holland

3. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

4. Who invented paper ?

Answer:

Cai Lun

5. Who invented Television ?

Answer:

John Logie Baird

6. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

7. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table