1. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

2. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

3. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

4. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

5. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

6. Who invented Java Language ?

Answer:

James Gosling

7. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902