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Who discovered the principle of buoyancy?

  • (A) Archimedes
  • (B) Isaac Newton
  • (C) Galileo Galilei
  • (D) Albert Einstein

Answer: Archimedes

Archimedes discovered the principle of buoyancy, stating that an object submerged in a fluid experiences an upward force equal to the weight of the displaced fluid.

Who is known for developing the first theory of electromagnetism?

  • (A) Michael Faraday
  • (B) Albert Einstein
  • (C) Nikola Tesla
  • (D) James Clerk Maxwell

Answer: James Clerk Maxwell

James Clerk Maxwell developed the theory of electromagnetism, unifying electricity and magnetism into a single theory.

Who developed the first working theory of atomic structure?

  • (A) J.J. Thomson
  • (B) Ernest Rutherford
  • (C) Niels Bohr
  • (D) John Dalton

Answer: John Dalton

John Dalton developed the first atomic theory, proposing that all matter is made of indivisible atoms.

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Who invented the first mechanical calculator?

  • (A) Blaise Pascal
  • (B) Charles Babbage
  • (C) Alan Turing
  • (D) Gottfried Wilhelm Leibniz

Answer: Blaise Pascal

Blaise Pascal invented the first mechanical calculator, known as the Pascaline, in the 17th century.

Who discovered the concept of evolution through natural selection?

  • (A) Alfred Russel Wallace
  • (B) Gregor Mendel
  • (C) Jean-Baptiste Lamarck
  • (D) Charles Darwin

Answer: Charles Darwin

Charles Darwin developed the theory of evolution through natural selection, explaining how species evolve over time.

Who discovered the laws of motion?

  • (A) Albert Einstein
  • (B) Isaac Newton
  • (C) Galileo Galilei
  • (D) Johannes Kepler

Answer: Isaac Newton

Isaac Newton formulated the three laws of motion, which are foundational to classical mechanics.

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Who is known for discovering the theory of classical conditioning?

  • (A) B.F. Skinner
  • (B) Sigmund Freud
  • (C) Carl Jung
  • (D) Ivan Pavlov

Answer: Ivan Pavlov

Ivan Pavlov is credited with discovering classical conditioning, a fundamental concept in behavioral psychology.

Who developed the first successful vaccine for rabies?

  • (A) Edward Jenner
  • (B) Robert Koch
  • (C) Louis Pasteur
  • (D) Joseph Lister

Answer: Louis Pasteur

Louis Pasteur developed the first successful rabies vaccine in 1885, a major breakthrough in immunology.

Who is known for the development of the first periodic table?

  • (A) Antoine Lavoisier
  • (B) Dmitri Mendeleev
  • (C) John Dalton
  • (D) Marie Curie

Answer: Dmitri Mendeleev

Dmitri Mendeleev is credited with developing the first periodic table of elements, organizing them by atomic mass and properties.

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Who invented the first electric battery?

  • (A) Benjamin Franklin
  • (B) Nikola Tesla
  • (C) Alessandro Volta
  • (D) Michael Faraday

Answer: Alessandro Volta

Alessandro Volta invented the first electric battery, known as the Voltaic pile, in 1800.

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