1. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

2. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

3. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

4. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

5. Who invented Proton ?

Answer:

Ernest Rutherford

6. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

7. Who invented Atomic Bomb ?

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