General Awareness · Science General

Inventors and Scientific Discoveries

4,454 Questions

This hub provides questions related to great inventors and their scientific discoveries. It covers the inventors of the telephone, radio, and microchips, alongside Nobel Prize winners. These facts are crucial for the general awareness section of major competitive exams.

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Inventors and Scientific Discoveries Questions

Multiple choice

What are some of the key works in the philosophy of proteomics?

  1. Hans-Jörg Rheinberger's Toward a History of Epistemic Things: Synthesizing Proteins in the Test Tube.

  2. Evelyn Fox Keller's Refiguring Life: Metaphors of Twentieth-Century Biology.

  3. Robert Cook-Deegan's The Gene Wars: Science, Politics, and the Human Genome.

  4. All of the above.

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Explanation

Some of the key works in the philosophy of proteomics include Hans-Jörg Rheinberger's Toward a History of Epistemic Things: Synthesizing Proteins in the Test Tube, Evelyn Fox Keller's Refiguring Life: Metaphors of Twentieth-Century Biology, and Robert Cook-Deegan's The Gene Wars: Science, Politics, and the Human Genome.

Multiple choice

Who developed the periodic table of elements?

  1. Dmitri Mendeleev

  2. John Newlands

  3. Antoine Lavoisier

  4. Robert Boyle

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Explanation

Dmitri Mendeleev developed the periodic table of elements in 1869, which is a tabular arrangement of chemical elements organized on the basis of their atomic number, electron configuration, and recurring chemical properties.

Multiple choice

Who discovered the electron?

  1. J.J. Thomson

  2. Ernest Rutherford

  3. Niels Bohr

  4. Albert Einstein

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Explanation

J.J. Thomson discovered the electron in 1897 through his experiments with cathode rays. He showed that cathode rays were made up of negatively charged particles, which he called electrons.

Multiple choice

Who developed the theory of atomic structure?

  1. Niels Bohr

  2. Ernest Rutherford

  3. J.J. Thomson

  4. Albert Einstein

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Explanation

Niels Bohr developed the theory of atomic structure in 1913, which proposed that electrons orbit the nucleus in discrete energy levels.

Multiple choice

Who discovered the neutron?

  1. James Chadwick

  2. Ernest Rutherford

  3. Niels Bohr

  4. Albert Einstein

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Explanation

James Chadwick discovered the neutron in 1932 through his experiments with beryllium and alpha particles. He showed that neutrons were uncharged particles with a mass that was slightly greater than that of a proton.

Multiple choice

Who developed the theory of relativity?

  1. Albert Einstein

  2. Niels Bohr

  3. Ernest Rutherford

  4. J.J. Thomson

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Explanation

Albert Einstein developed the theory of relativity in the early 20th century. The theory of relativity is a theory of gravity that explains the relationship between space, time, and matter.

Multiple choice

Who discovered the proton?

  1. Ernest Rutherford

  2. Niels Bohr

  3. J.J. Thomson

  4. Albert Einstein

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Explanation

Ernest Rutherford discovered the proton in 1919 through his experiments with alpha particles and nitrogen atoms. He showed that alpha particles could knock protons out of nitrogen atoms.

Multiple choice

Who developed the quantum theory of atoms?

  1. Niels Bohr

  2. Werner Heisenberg

  3. Max Planck

  4. Albert Einstein

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Explanation

Niels Bohr developed the quantum theory of atoms in 1913, which proposed that electrons orbit the nucleus in discrete energy levels. This theory explained the spectrum of light emitted by hydrogen atoms.

Multiple choice

Who is known for his contributions to the study of electricity and magnetism?

  1. Michael Faraday

  2. James Clerk Maxwell

  3. Thomas Edison

  4. Nikola Tesla

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Explanation

Michael Faraday made significant contributions to the study of electricity and magnetism, including his discovery of electromagnetic induction, which laid the groundwork for the development of electric generators and transformers.

Multiple choice

Which scientist developed the theory of evolution by natural selection?

  1. Charles Darwin

  2. Alfred Russel Wallace

  3. Thomas Malthus

  4. Jean-Baptiste Lamarck

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Explanation

Charles Darwin proposed the theory of evolution by natural selection, which revolutionized our understanding of the diversity of life and the mechanisms driving its evolution.

Multiple choice

Who discovered the structure of DNA, the molecule that carries genetic information?

  1. James Watson

  2. Francis Crick

  3. Rosalind Franklin

  4. Maurice Wilkins

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Explanation

James Watson and Francis Crick discovered the double helix structure of DNA, providing a fundamental understanding of the genetic material and its role in heredity.

Multiple choice

Who is known for his pioneering work in quantum mechanics and the development of the uncertainty principle?

  1. Werner Heisenberg

  2. Max Planck

  3. Niels Bohr

  4. Erwin Schrödinger

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Explanation

Werner Heisenberg formulated the uncertainty principle, a fundamental principle in quantum mechanics that states that the more precisely the position of a particle is known, the less precisely its momentum can be known, and vice versa.

Multiple choice

Which scientist discovered the electron, a fundamental subatomic particle?

  1. J.J. Thomson

  2. Ernest Rutherford

  3. Niels Bohr

  4. James Chadwick

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Explanation

J.J. Thomson discovered the electron, a fundamental subatomic particle with a negative charge, through his experiments with cathode rays.

Multiple choice

Who is known for his contributions to the development of the atomic theory and the periodic table?

  1. Dmitri Mendeleev

  2. John Dalton

  3. Antoine Lavoisier

  4. Robert Boyle

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Explanation

Dmitri Mendeleev developed the periodic table, a tabular arrangement of chemical elements organized by their atomic number, properties, and recurring chemical patterns.

Multiple choice

Who discovered the structure of benzene, a fundamental organic compound?

  1. Friedrich Kekulé

  2. Joseph Louis Gay-Lussac

  3. Amedeo Avogadro

  4. John Dalton

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Explanation

Friedrich Kekulé proposed the hexagonal structure of benzene, a fundamental organic compound with a ring of six carbon atoms, revolutionizing our understanding of organic chemistry.