1. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

2. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

3. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

4. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

5. Who invented by Electric Lamp ?

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

6. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

7. Who invented Printing Press ?

Answer:

Johannes Gutenberg