1. Who invented Printing Press ?

Answer:

Johannes Gutenberg

2. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

3. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

4. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

5. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

6. Who invented c language

Answer:

Dennis Ritchie

7. Who invented DNA Structure ?

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