1. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

2. Who invented HIV ?

Answer:

3. Who invented colour television ?

Answer:

Peter Carl Goldmark

4. Who invented Helicopter ?

Answer:

Igor Sikorsky

5. Who invented Radiocarbon ?

Answer:

Willard Libby

6. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

7. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902