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Who discovered the vaccine for smallpox?

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

Answer: Edward Jenner

Edward Jenner developed the smallpox vaccine in 1796, which led to the eventual eradication of the disease.

Who discovered the circulation of blood?

  • (A) William Harvey
  • (B) Andreas Vesalius
  • (C) Hippocrates
  • (D) Galen

Answer: William Harvey

William Harvey discovered the circulation of blood in the human body, revolutionizing biology and medicine.

Who is known for his work on the laws of motion and planetary motion?

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

Answer: Johannes Kepler

Johannes Kepler formulated the laws of planetary motion, which describe the orbits of planets around the sun.

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Who invented the first practical telephone?

  • (A) Thomas Edison
  • (B) Nikola Tesla
  • (C) Alexander Graham Bell
  • (D) Guglielmo Marconi

Answer: Alexander Graham Bell

Alexander Graham Bell is credited with inventing the first practical telephone in 1876.

Who is known for formulating the periodic table?

  • (A) John Dalton
  • (B) Dmitri Mendeleev
  • (C) Antoine Lavoisier
  • (D) J.J. Thomson

Answer: Dmitri Mendeleev

Dmitri Mendeleev is credited with developing the periodic table, arranging elements by atomic mass and properties.

Who discovered the law of conservation of mass?

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

Answer: Antoine Lavoisier

Antoine Lavoisier is known as the father of modern chemistry for discovering the law of conservation of mass.

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Who discovered the electron?

  • (A) Ernest Rutherford
  • (B) J.J. Thomson
  • (C) Niels Bohr
  • (D) Albert Einstein

Answer: J.J. Thomson

J.J. Thomson discovered the electron in 1897, opening the door to atomic physics.

Who is credited with the discovery of penicillin?

  • (A) Alexander Fleming
  • (B) Louis Pasteur
  • (C) Robert Koch
  • (D) Joseph Lister

Answer: Alexander Fleming

Alexander Fleming discovered penicillin in 1928, revolutionizing medicine and antibiotics.

Who is known for developing the laws of motion and universal gravitation?

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

Answer: Isaac Newton

Isaac Newtons laws of motion and universal gravitation laid the foundation for classical mechanics.

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Who formulated the theory of relativity?

  • (A) Albert Einstein
  • (B) Isaac Newton
  • (C) Niels Bohr
  • (D) Max Planck

Answer: Albert Einstein

Albert Einstein developed the theory of relativity, fundamentally changing our understanding of space, time and energy.

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