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MCQs -for Competitive Exams & Improve Knowledge

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Who proposed the theory of natural selection?

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

Answer: Charles Darwin

Charles Darwin proposed the theory of natural selection as the mechanism for evolution.

Who discovered that the earth revolves around the sun?

  • (A) Galileo Galilei
  • (B) Johannes Kepler
  • (C) Isaac Newton
  • (D) Nicolaus Copernicus

Answer: Nicolaus Copernicus

Nicolaus Copernicus developed the heliocentric theory, which stated that Earth revolves around the Sun.

Who was the first to synthesize artificial diamonds?

  • (A) Carl Bosch
  • (B) Marie Curie
  • (C) Robert Hooke
  • (D) H. Tracy Hall

Answer: H. Tracy Hall

H. Tracy Hall was the first to synthesize artificial diamonds, a breakthrough in chemistry and materials science.

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Who developed the first working vaccine for tuberculosis?

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

Answer: Albert Calmette

Albert Calmette developed the first effective tuberculosis vaccine, known as the BCG vaccine.

Who is credited with the discovery of the radio?

  • (A) Albert Einstein
  • (B) Guglielmo Marconi
  • (C) Nikola Tesla
  • (D) Heinrich Hertz

Answer: Guglielmo Marconi

Guglielmo Marconi is credited with the invention of the radio, enabling long-distance wireless communication.

Who is known for the discovery of electromagnetic induction?

  • (A) Michael Faraday
  • (B) James Clerk Maxwell
  • (C) Nikola Tesla
  • (D) Thomas Edison

Answer: Michael Faraday

Michael Faraday discovered electromagnetic induction, which is the process by which a changing magnetic field induces an electric current.

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