General Awareness · 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.

Famous inventionsNobel Prize winnersScientific conceptsKey inventors

Inventors and Scientific Discoveries Questions

Multiple choice
  1. Emil Adolf Von

  2. John F. Enders

  3. Edward Jenner

  4. J. Niccolie

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

Tetanus was discovered by Emil Adolf von Behring (also known as Emil von Behring), a German physiologist who received the Nobel Prize in 1901 for his work on serum therapy, including tetanus antitoxin.

Multiple choice
  1. Carbonated soda

  2. Electricity in lightning

  3. Bermuda Triangle

  4. Existence of isotopes

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

Frederick Soddy was a British radiochemist who, along with Ernest Rutherford, demonstrated that radioactive decay involves the transformation of one element into another. He coined the term 'isotope' and received the 1921 Nobel Prize in Chemistry for his work on isotopes.

Multiple choice
  1. Calculator

  2. X-rays

  3. Mobile phone

  4. Laser

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

Dr. Charles H. Townes was an American physicist who invented the maser (microwave amplification by stimulated emission of radiation) and later co-invented the laser with Arthur Schawlow. He received the 1964 Nobel Prize in Physics for this fundamental work in quantum electronics.

Multiple choice
  1. spindles

  2. chrome plating

  3. rayon

  4. lactometer

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

Sir Joseph Swan is credited with the invention of rayon, the first artificial fiber, in the late 19th century. He was a British physicist and chemist who worked on various inventions including early electric lighting. Chrome plating, lactometer, and spindles have different inventors and purposes.

Multiple choice
  1. Ernst Haeckel

  2. Karl Wilhelm von Nägeli

  3. Van Neil

  4. Stephen Hales

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

Karl Wilhelm von Nägeli first used the term meristem in 1858 in his book Beiträge zur Wissenschaftlichen Botanik.

Multiple choice
  1. Robert H. Daines

  2. Theodor Otto Diener

  3. David Gottlieb

  4. Edwin Earle Honey

  5. Gary A. Strobel

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

Theodor Otto Diener is an American plant pathologist and was the first in the field to describe viroids.Viroids were discovered and named by Theodor Otto Diener, a plant pathologist at the Agricultural Research Service in Maryland, in 1971.

Multiple choice
  1. C.A.Cutter

  2. Melvil Dewey

  3. W.C.Berwick Sayers

  4. E.C.Richardson

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

E.C. Richardson defined notation as a shorthand sign in classification. This definition highlights notation's role as a concise symbol system for representing classification concepts.

Multiple choice
  1. Porter et al

  2. Claude

  3. Kolliker

  4. Benda

  5. Christian de Duve

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

Endoplasmic reticulum was discovered by Porter et al using electron microscopy.

Multiple choice
  1. J. J. Thomson

  2. Goldstein

  3. William Crookes

  4. Chadwick

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

An anode ray (also positive ray or canal ray) is a beam of positive ions that is created by certain types of gas discharge tubes. They were first observed in Crookes tubes during experiments by the German scientist Eugen Goldstein, in 1886.

Multiple choice
  1. Richard Buckland

  2. James Parkinson

  3. Takeshi Watanade

  4. Mother India

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

James Parkinson, an English physician, first described the disease that now bears his name in 1817 in his work 'An Essay on the Shaking Palsy'. The condition causes tremors, rigidity, and bradykinesia.

Multiple choice
  1. Barney Clark

  2. Colin Powell

  3. Emil Jannigs

  4. Christian Barnard

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

Barney Clark was the first recipient of a permanent artificial heart (the Jarvik-7) in 1982. He survived for 112 days with the device. This was a landmark in cardiac surgery and artificial organ technology.