16. Who discovered the circulation of blood?
a) William Harvey
b) Louis Pasteur
c) Robert Koch
d) Joseph Lister
Answer: a) William Harvey
17. Who invented the barometer?
a) Evangelista Torricelli
b) Blaise Pascal
c) Isaac Newton
d) Galileo Galilei
Answer: a) Evangelista Torricelli
18. Who discovered the law of electromagnetism?
a) Michael Faraday
b) James Clerk Maxwell
c) Thomas Edison
d) Nikola Tesla
Answer: b) James Clerk Maxwell
19. Who discovered the structure of the atom?
a) Ernest Rutherford
b) J.J. Thomson
c) Niels Bohr
d) Werner Heisenberg
Answer: a) Ernest Rutherford
20. Who invented the first radio?
a) Guglielmo Marconi
b) Nikola Tesla
c) Samuel Morse
d) Alexander Graham Bell
Answer: a) Guglielmo Marconi
