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. Jack Kilby

  2. Charles Babbage

  3. Konrad Zuse

  4. Steve Jobs

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

The Analytical Engine was designed by Charles Babbage in the 1830s-1860s. Though never built in his lifetime, it was the first proposed mechanical general-purpose computer. Ada Lovelace wrote algorithms for it, making her the first programmer. Babbage is called the 'father of the computer'.

Multiple choice
  1. Jack Kilby

  2. Bardeen

  3. Charles Babbage

  4. Konrad Zuse

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

John Bardeen, along with William Shockley and Walter Brattain, invented the transistor at Bell Labs in 1947. This invention revolutionized electronics by replacing bulky vacuum tubes with tiny, reliable solid-state devices. Transistors became the fundamental building blocks of modern computers, allowing for miniaturization and exponential growth in computing power.

Multiple choice
  1. Jack Kilby

  2. Bardeen

  3. Shockley

  4. Konrad Zuse

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

Jack Kilby invented the first integrated circuit (IC) in 1958 at Texas Instruments, combining multiple electronic components onto a single semiconductor chip. This invention revolutionized electronics by dramatically reducing circuit size while increasing reliability and performance. Kilby was awarded the 2000 Nobel Prize in Physics for this breakthrough.

Multiple choice
  1. Bard

  2. Bardeen

  3. Shockley

  4. Konrad Zuse

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

Konrad Zuse built the Z1 in 1938 in his parents' living room in Berlin, Germany. It was the first binary digital computer, using binary arithmetic and floating-point numbers. Zuse's work was groundbreaking as it preceded other early computing machines, though it was mechanical rather than electronic.

Multiple choice
  1. Jacob and Monad

  2. Watson and Crick

  3. Nirenberg

  4. Beadle and Tatum

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

Genetic code was given by Nirenberg.

Multiple choice
  1. Thomas Henry Huxley

  2. Clinton Richard Dawkins

  3. Hugo de Vries

  4. Samuel Wilberforce

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

Hugo de Vries is known chiefly for suggesting the concept of genes, rediscovering the laws of heredity in the 1890s while unaware of Gregor Mendel's work, for introducing the term mutation, and for developing a mutation theory of evolution.

Multiple choice
  1. Brian J. Ford

  2. William Bateson

  3. Carl Correns

  4. Leeuwenhoek

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

William Bateson was the first person to use the term genetics to describe the study of heredity and biological inheritance, and the chief populariser of the ideas of Gregor Mendel .

Multiple choice
  1. Jeevan and Jerry

  2. George and Henry Williams

  3. Miliband and Paul Shoeman

  4. Cerletti and Bini

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

Cerletti and Bini were Italian psychiatrists who pioneered Electroconvulsive Therapy (ECT) in 1937. They developed this treatment modality while researching the therapeutic potential of induced seizures.

Multiple choice
  1. J.L. Baird

  2. Graham Bell

  3. G. Marconi

  4. J.J. Thomson

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

John Logie Baird (J.L. Baird) invented television in the 1920s. He demonstrated the first working television system in 1926. Graham Bell invented the telephone, Marconi is known for wireless telegraphy/radio, and J.J. Thomson discovered the electron.

Multiple choice
  1. air brake

  2. piston

  3. water pump

  4. dynamo

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

George Westinghouse invented the railway air brake system in 1869, which used compressed air to stop trains simultaneously from the locomotive. This revolutionized rail safety by allowing trains to stop much faster than before. He also founded Westinghouse Electric Company.

Multiple choice
  1. Victoria Falls

  2. Niagara Falls

  3. smallpox virus

  4. anti rabis vaccine

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

Louis Hennepin, a Belgian Catholic missionary and explorer, is credited with being the first European to discover and describe Niagara Falls in 1678 while exploring the Great Lakes region with Rene-Robert Cavelier de La Salle. He later published accounts of his travels.

Multiple choice
  1. Mauchly and Eckert

  2. M. Taube

  3. Howard Read

  4. V. Newman

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

UNIVAC-1 (Universal Automatic Computer I) was the first commercially produced computer in the United States. It was designed by J. Presper Eckert and John Mauchly, who had previously worked on ENIAC. UNIVAC-1 became famous for correctly predicting the 1952 US presidential election on live television.

Multiple choice
  1. William Henry Perkin

  2. J.Takamine

  3. K .Tanaka

  4. Edward Lawrie Tatum

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

The first human-made (synthetic) organic dye, mauveine, was discovered serendipitously by William Henry Perkin in 1856. Many thousands of synthetic dyes have since been prepared.