1. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

2. Who invented DNA Structure ?

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

3. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

4. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

5. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

6. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

7. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765