1. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

2. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

3. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

4. Who invented Hydrogen bomb ?

Answer:

Edward Teller

5. Who invented Helicopter ?

Answer:

Igor Sikorsky

6. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

7. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683