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. C. Babbage

  2. W.H.Britain

  3. J.S.Kilby

  4. Robert Noyce

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

Jack Kilby of Texas Instruments is credited with inventing the first integrated circuit in 1958. Robert Noyce independently developed a more practical version using silicon shortly after.

Multiple choice
  1. T.J.Watson Sr.

  2. Charles Babbage

  3. John Von Neumann

  4. Bill Gates

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

John Von Neumann is credited with the stored-program concept, where both instructions and data are stored in the same memory space.

Multiple choice
  1. Dijkstra

  2. Niklaus Writh

  3. D.Knuth

  4. Aho

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

Niklaus Wirth created the Pascal programming language in 1970. It was designed as a language for teaching structured programming.

Multiple choice
  1. was never completed

  2. having most of ideas of modern computers

  3. both (1) and (2)

  4. None of above

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

Babbage's Analytical Engine was never completed during his lifetime, but its design included the essential components of a modern computer, such as an ALU, memory, and control flow.

Multiple choice
  1. Frederick Frost Blackman

  2. Mitchell

  3. Sachs

  4. Arnon

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

Cyclic photophosphorylation was the term,  named by the scientist Arnon. The synthesis of ATP from ADP during light reaction of photosynthesis,  is called photophosphorylation.

Multiple choice
  1. Helmont

  2. Joseph Priestley

  3. Ingen-Housz

  4. Jean Senebier

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

Ingen-Housz was a Dutch physiologist, biologist and chemist. He is best known for showing that light is essential to photosynthesis and thus having discovered photosynthesis. He also discovered that plants, like animals have cellular respiration.

Multiple choice
  1. Cell was discovered by Mendel.

  2. Cell was discovered in 1665.

  3. It was discovered under a simple magnifying device.

  4. The discovered cells were dead cells.

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

Cell was discovered by Robert Hooke in 1665 under a simple magnifying device from a thin slice of cork. These were dead cells.

Multiple choice
  1. Bill Gates

  2. Paul Allen

  3. John Herschel

  4. Douglas Engelbart

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

Douglas Engelbart is credited with inventing the computer mouse in the 1960s while working at the Stanford Research Institute. It was famously demonstrated in his 1968 presentation known as The Mother of All Demos.