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 medieval world history world history general knowledge

Match the following.

List I List II
A. Hargreaves $1.$ Invented a machine which speed up spinning
B. Crompton $2.$ Combined the advantage of the earlier invented machines
C. Arkwright $3.$ Adopted the speed up spinning machine for running with water

  1. A-1, B-2, C-3

  2. A-2, B-1, C-3

  3. A-2,B- 3,C- 1

  4. A-3,B- 2,C- 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

James Hargreaves invented the Spinning Jenny (1), Samuel Crompton invented the Spinning Mule (2), and Richard Arkwright developed the Water Frame (3).

Multiple choice medieval world history world history general knowledge

Arrange the following inventions in the field of cotton Industry in chronological order (starting with the earliest).
$1.$ James Hargeaves' Spinning Jenny
$2.$ John Kay's Flying Shuttle
$3.$ Samuel Crompton's Mule
$4.$ Richard Arkwright's Water Frame.

  1. $1, 3, 4, 2$
  2. $2, 1, 4, 3$
  3. $4, 1, 3, 2$
  4. $2, 4, 1, 3$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chronological order: John Kay's Flying Shuttle (1733), James Hargreaves' Spinning Jenny (1764), Richard Arkwright's Water Frame (1769), and Samuel Crompton's Mule (1779). This matches sequence 2, 1, 4, 3.

Multiple choice botany modes of reproduction fertilization in organisms sexual reproduction in organisms reproduction in organisms

Fertilization was discovered by

  1. Strasburger

  2. Robert Brown

  3. Lamarck

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

Fertilization is the process of formation of the zygote by the fusion of male and female gamete. It was discovered by Strasburger. Lamarck and Darwin worked on the theories of evolution and Robert Brown discovered the nucleus.

So, the correct option is  'Strasburger'

Multiple choice botany modes of reproduction fertilization in organisms sexual reproduction in organisms reproduction in organisms

The phenomenon of fertilization was first perceived by 

  1. Weismann

  2. Leeuwenhoek

  3. Robert Hooke

  4. Hertwig
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The phenomenon of fertilization was first perceived by the German biologist Oscar Hertwig in sea urchin eggs in 1876. Hertwig observed that the sperm nuclei and egg fused during fertilization resulting in the generation of new organism. Thus the correct answer is option D.

Multiple choice physics electromagnetic forces oersted experiment oersted's experiment magnetic field due to a straight current carrying conductor

Who discovered the relationship between electricity and magnetism

  1. Faraday

  2. Newton

  3. Maxwell

  4. Oersted
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Answer is D.

Electromagnetism is the study of the electromagnetic force which is a type of physical interaction that occurs between electrically charged particles. 
Hans Christian Oersted discovered the relationship between electricity and magnetism in 1820.

Multiple choice physics electromagnetic forces oersted experiment oersted's experiment magnetic field due to a straight current carrying conductor

Who discovered the relationship between electricity and magnetism?

  1. Faraday

  2. Newton

  3. Maxwell

  4. Oersted
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Answer is D.

Electromagnetism is the study of the electromagnetic force which is a type of physical interaction that occurs between electrically charged particles. 
Hans Christian Oersted discovered the relationship between electricity and magnetism in 1820.

Multiple choice evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

The term 'Homeostasis' was proposed by

  1. Claude Bernard

  2. Walter cannon

  3. Marcello Malpighi

  4. Henle
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Walter cannon developed the concept of homeostasis from the earlier idea of Claude Bernard and popularized it in his book 'The Wisdom of the Body', 1932. Cannon presented four tentative propositions to describe the general features of homeostasis: 

1. Constancy in an open system- Such as our body represent, it requires mechanisms that act to maintain this constancy.
2. Steady-state conditions require that any tendency towards change automatically meets with factors that resist change.
3. Regulating system that determines the homeostatic state consists of a number of cooperating mechanisms acting simultaneously or successively.
4. Homeostasis is the result of organized self-government, it does not occur by chance.

Multiple choice zoology molecular basis of inheritance genome projects human genome project human genome project and dna fingerprinting

Human genome project was

discovered by

  1. Francis Collins and Roderick

  2. Watson and Crick

  3. Beadle and Tatum

  4. Paul Berg and Wollman
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Human Genome Project was led by Francis Collins (director of the National Human Genome Research Institute) and Craig Venter (founder of Celera Genomics), not Watson and Crick who discovered DNA structure decades earlier. The question likely refers to this leadership.

Multiple choice zoology earthworm structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

Which of the following scientist explained Pheretima posthuma?

  1. Darwin

  2. Bose

  3. K. N. Bahal

  4. C.S. Basu
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Darwin is known for his famous theory of evolution. Jagdish Chandra Bose is known for his contribution in the field of radio and microwave optics. Pheretima posthuma is the zoological name of an earthworm. Indian scientist, Karm Narayan Bahl (K. N. Bahl) studied the anatomy of Pheretima posthuma (earthworm). 

So, the correct answer is option C.

Multiple choice social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

James Watt invented the ______.

  1. Steam locomotive engine

  2. Dynamo

  3. Steam engine

  4. Steam printing press
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The steam engine was invented by James Watt in 1718. A steam engine is a machine that converts the heat energy of steam into mechanical energy. A steam engine passes its steam into a cylinder, where it then pushes a piston back and forth.

Multiple choice social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

Who studied Newcomen's steam engine?

  1. John Kay

  2. Faraday

  3. James Watt

  4. George Stephenson
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first steam engine was invented by Thomas Newcomen in 1712 in England. However, Newcomen's engine was inefficient and could only be used near coalmines, where coal was abundant and cheap enough to run the engine. If steam engines were to have wider uses, they needed to be improved. James Watt studied the Newcomen's steam engine and introduced refined steam engine which was more efficient and more powerful in 1765.