1. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

2. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

3. Who invented X-ray ?

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

4. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

5. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

6. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

7. Who invented Safety razor ?

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