General Awareness ยท Science General

Inventors and Scientific Discoveries

4,616 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
  1. The Babylonians

  2. The ancient Persians

  3. Albert Einstein

  4. 9-year Milton Sirotta.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In 1920, mathematician Edward Kasner asked his nine-year-old nephew, Milton Sirotta, to invent a name for a very large number (1 followed by 100 zeros). Milton suggested "googol," which later inspired the name of the search engine Google.

Multiple choice
  1. Ivanowsky

  2. Lwoff

  3. Pasteur

  4. Diener

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Theodore O. Diener discovered viroids in 1971 while studying the potato spindle tuber disease.

Multiple choice
  1. Pasteur

  2. Ivanowsky

  3. Beijerinck

  4. None

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Martinus Beijerinck demonstrated that the extract of infected tobacco plants could cause disease in healthy plants, coining the phrase 'Contagium vivum fluidum' (contagious living fluid).

Multiple choice
  1. Robert hooke

  2. Robert straus

  3. Edward jennar

  4. Robin warren

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Edward Jenner is the scientist credited with creating the first vaccine, which was for smallpox, using cowpox material. Note the spelling in the option is 'jennar'.

Multiple choice
    1. Robert Marsh
  1. Robert Frost

  2. Robert Hooke

  3. Robert Hall

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Robert Hooke is credited with the discovery of cells in 1665 after observing cork under a microscope. The other names listed are not associated with this biological discovery.

Multiple choice
  1. Lamarck

  2. Eldredge

  3. de Vries

  4. Darwin

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hugo de Vries was a Dutch botanist who proposed the Mutation Theory in the early 20th century, suggesting that new species could arise through sudden, large-scale mutations.

Multiple choice
  1. Georges-Louis Comte Leclerc de Buffon

  2. Erasmus Darwin

  3. Jean-Baptiste Lamarck

  4. Carolus Linnaeus

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Buffon was one of the first to suggest that species could change over time and that the environment played a role in these changes, even though he did not propose a mechanism like natural selection.

Multiple choice
  1. John Ray

  2. Galileo Galilei

  3. Erasmus Darwin

  4. Georges-Louis Comte Leclerc de Buffon

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

John Ray was a pioneering naturalist who introduced the concepts of genus and species in his classification work. The other figures listed are associated with different scientific contributions.

Multiple choice
  1. James Watson

  2. Maurice Wilkins

  3. Francis Crick

  4. Rosalind Franklin

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rosalind Franklin provided critical X-ray diffraction data that revealed the structure of DNA, but she died before the Nobel Prize was awarded to Watson, Crick, and Wilkins. Nobel Prizes are not awarded posthumously.