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.

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Inventors and Scientific Discoveries Questions

Multiple choice

Which of the following scientists developed the first synthetic living cell?

  1. Noel Fitzpatrick

  2. William J Rutter

  3. Dr Craig Venter

  4. Leonard Herzenberg

  5. Kurt-Hirschhorn
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Scientists   in   the   US   in   May   2010   have succeeded in developing the first synthetic living cell. The team was led by Dr Craig Venter of the J Craig Venter Institute (JCVI) in Maryland and California. The researchers constructed a bacterium's    genetic    software and transplanted it into a host cell.  The researchers hope eventually   to   design bacterial   cells   that   will   produce medicines and fuels and even absorb greenhouse gases.

Multiple choice

Which of the following was invented by John Shepherd-Barron?

  1. Computed Tomography (CT) scan machine

  2. Automated Teller Machine

  3. Artificial insulin

  4. High Definition TV

  5. Washing machine
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

: India-born Scot John Shepherd-Barron, inventor of the Automated Teller Machine (ATM), passed away at the age of 84 on May 21, 2010. The first ATM was installed at a London bank in 1967. Reg Varney became the first person to withdraw cash. The first ATM was operated by inserting a special cheque that was matched against a Personal Identification Number.

Multiple choice

Who invented the gramaphone?

  1. Thomas A. Edison

  2. William Murdoch

  3. Wilhelm Shickard

  4. Wright Brothers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Thomas Edison invented the phonograph in 1877, which is the device that evolved into the gramophone.

Multiple choice

Language for the blind was developed by

  1. Louis Braille

  2. Bill Gates

  3. Picasso

  4. Aesop
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Louis Braille invented the Braille system in 1824, which allows blind or visually impaired people to read and write using raised dots.

Multiple choice

Directions: The sentence below has one or two blanks, each blank indicating that something has been omitted. Beneath the sentence are five lettered words or set of words. Choose the word or set of words for each blank that best fits the meaning of the sentence as a whole.

Longdale and Stern discovered that mitochondria and chloroplasts __________ a long, identifiable sequence of DNA; such a coincidence could be _______ only by the transfer of DNA between the two systems.

  1. manufacture, accomplished

  2. reveal, repeated

  3. exhibit, determined

  4. share, explained
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Note the words “identifiable” and “transfer”. Thus share- explained

Multiple choice

The electron microscope was discovered by

  1. Robert Hook

  2. Swanson, C. P

  3. Rudolf and Kolliker

  4. Knoll and Ruska
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The first electron microscope was developed by Max Knoll and Ernst Ruska at the Technical University of Berlin in 1931. This invention revolutionized biological and material imaging.

Multiple choice

Artificial system of classification was given by

  1. Linnaeus

  2. Bentham & Hooker

  3. Engler & Prantel

  4. Hutchinson
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carl Linnaeus was a Swedish botanist, physician and zoologist who formalised the modern system of naming organisms called binomial nomenclature.