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Who discovered the process of nitrogen fixation?

  • (A) Louis Pasteur
  • (B) Albert Calmette
  • (C) Fritz Haber
  • (D) Michael Faraday

Answer: Fritz Haber

Fritz Haber is credited with discovering the process of nitrogen fixation, which enabled the development of synthetic fertilizers.

Who discovered the law of gravity?

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

Answer: Isaac Newton

Isaac Newton is famous for formulating the law of gravity, which explains the force of attraction between objects.

Who developed the theory of natural selection?

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

Answer: Charles Darwin

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

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Who is known for his work in developing the modern atomic model?

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

Answer: Niels Bohr

Niels Bohr developed the Bohr model of the atom, which helped explain the arrangement of electrons in atoms.

Who formulated the theory of electromagnetism?

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

Answer: James Clerk Maxwell

James Clerk Maxwell formulated the theory of electromagnetism, unifying electricity, magnetism and light.

Who discovered the principles of inheritance?

  • (A) Charles Darwin
  • (B) Gregor Mendel
  • (C) Alfred Russel Wallace
  • (D) Niels Bohr

Answer: Gregor Mendel

Gregor Mendels experiments with pea plants led to the discovery of the fundamental principles of inheritance.

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Who invented the first practical vaccine for smallpox?

  • (A) Robert Koch
  • (B) Edward Jenner
  • (C) Louis Pasteur
  • (D) Albert Calmette

Answer: Edward Jenner

Edward Jenner developed the first smallpox vaccine in 1796, pioneering immunization against infectious diseases.

Who is credited with the discovery of the electron?

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

Answer: J.J. Thomson

J.J. Thomson is credited with discovering the electron in 1897, which changed the understanding of atomic structure.

Who discovered the circulation of blood in the human body?

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

Answer: William Harvey

William Harvey discovered the circulation of blood in the human body in the 17th century, revolutionizing medicine.

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Who formulated the periodic law and the periodic table?

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

Answer: Dmitri Mendeleev

Dmitri Mendeleev formulated the periodic law and developed the periodic table, organizing elements by their properties.

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