A) George Westinghouse
B) Elisha Otis
C) Alexander Graham Bell
D) Henry Bessemer
Correct Answer: B) Elisha Otis
Explanation: Elisha Otis invented the safety elevator in 1853, which included a safety brake to prevent falls, revolutionizing building construction.
A) Nicolaus Copernicus
B) Galileo Galilei
C) Johannes Kepler
D) Isaac Newton
Correct Answer: C) Johannes Kepler
Explanation: Johannes Kepler formulated the laws of planetary motion in the early 17th century, describing the orbits of planets around the sun.
A) John Logie Baird
B) Philo Farnsworth
C) Vladimir Zworykin
D) Charles Francis Jenkins
Correct Answer: B) Philo Farnsworth
Explanation: Philo Farnsworth is credited with inventing the first fully functional all-electronic image pickup device (video camera tube) and the first fully functional and complete all-electronic television system in 1927.
A) Jonas Salk
B) Robert Koch
C) Louis Pasteur
D) Albert Sabin
Correct Answer: D) Albert Sabin
Explanation: Albert Sabin developed the oral polio vaccine in the early 1960s, which has been widely used for global polio eradication.
A) Michael Faraday
B) Nikola Tesla
C) Thomas Edison
D) George Westinghouse
Answer: A) Michael Faraday
Explanation: Michael Faraday invented the dynamo in 1831, which was the first device to produce electricity by electromagnetic induction.
A) Isaac Newton
B) Galileo Galilei
C) Archimedes
D) Blaise Pascal
Correct Answer: C) Archimedes
Explanation: Archimedes discovered the principle of buoyancy, known as Archimedes’ principle, in the 3rd century BC.
A) Evangelista Torricelli
B) Blaise Pascal
C) Robert Boyle
D) Galileo Galilei
Correct Answer: A) Evangelista Torricelli
Explanation: Evangelista Torricelli invented the barometer in 1643, which measures atmospheric pressure.
A) Antoine Lavoisier
B) Joseph Priestley
C) Carl Wilhelm Scheele
D) John Dalton
Correct Answer: B) Joseph Priestley
Explanation: Joseph Priestley is credited with discovering oxygen in 1774, although Carl Wilhelm Scheele also independently discovered it around the same time.
A) Robert Fulton
B) John Fitch
C) James Watt
D) Samuel Morse
Correct Answer: A) Robert Fulton
Explanation: Robert Fulton developed the first successful steamboat, the Clermont, in 1807, which significantly improved water transportation.
A) Ernest Rutherford
B) Max Planck
C) Niels Bohr
D) J.J. Thomson
Correct Answer: D) J.J. Thomson
Explanation: J.J. Thomson discovered the electron in 1897 through his experiments with cathode rays.
A) Thomas Edison
B) Nikola Tesla
C) Alexander Graham Bell
D) Elisha Gray
Correct Answer: C) Alexander Graham Bell
Explanation: Alexander Graham Bell invented the first practical telephone in 1876, revolutionizing communication.
A) Marie Curie
B) Henri Becquerel
C) Wilhelm Röntgen
D) Albert Einstein
Correct Answer: B) Henri Becquerel
Explanation: Henri Becquerel discovered radioactivity in 1896, leading to further research by Marie and Pierre Curie.
A) William Caxton
B) Johannes Gutenberg
C) Aldus Manutius
D) Bi Sheng
Answer: B) Johannes Gutenberg
Explanation: Johannes Gutenberg invented the movable-type printing press around 1440, revolutionizing the spread of information.
A) Nicolaus Copernicus
B) Galileo Galilei
C) Johannes Kepler
D) Isaac Newton
Correct Answer: C) Johannes Kepler
Explanation: Johannes Kepler formulated the laws of planetary motion in the early 17th century, describing the orbits of planets around the sun.
A) Robert Watson-Watt
B) Nikola Tesla
C) Guglielmo Marconi
D) Heinrich Hertz
Correct Answer: A) Robert Watson-Watt
Explanation: Robert Watson-Watt developed the first practical radar system in the 1930s, crucial for detecting aircraft during World War II.
A) Gottlieb Daimler
B) Karl Benz
C) Henry Ford
D) Rudolf Diesel
Correct Answer: C) Henry Ford
Explanation: Henry Ford revolutionized the automobile industry by introducing the assembly line production method for the Model T in 1908.
A) Thomas Newcomen
B) James Watt
C) George Stephenson
D) Charles Parsons
Correct Answer: D) Charles Parsons
Explanation: Charles Parsons invented the first practical steam turbine in 1884, which greatly improved the efficiency of steam engines.
A) Michael Faraday
B) James Clerk Maxwell
C) Heinrich Hertz
D) André-Marie Ampère
Correct Answer: B) James Clerk Maxwell
Explanation: James Clerk Maxwell developed the theory of electromagnetism in the 1860s, encapsulated in Maxwell’s equations, which describe the behavior of electric and magnetic fields.
A) Isaac Newton
B) Niels Bohr
C) Albert Einstein
D) Max Planck
Correct Answer: C) Albert Einstein
Explanation: Albert Einstein developed the theory of general relativity, published in 1915, which describes the gravitational interaction as a curvature of spacetime.
A) Louis Daguerre
B) George Eastman
C) Nicéphore Niépce
D) William Henry Fox Talbot
Correct Answer: A) Louis Daguerre
Explanation: Louis Daguerre developed the daguerreotype process in 1839, which was the first practical method of photography.
& stay ahead of your competitors!
* Subscribe to our email newsletter to get the latest posts delivered right to your email.
