1. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

2. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

3. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

4. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

5. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

6. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

7. Who invented Hydrogen bomb ?

Answer:

Edward Teller