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

Double fertilisation was discovered by

  1. Nawaschin

  2. Strasburger

  3. Emerson

  4. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Double fertilisation was discovered by S. G. Nawaschin (1897) in Lilium and Fritillaria species.

Multiple choice

Vaccination was discovered by

  1. Alexander Fleming

  2. Louis Pasteur

  3. Robert Koch

  4. Edward Genner

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

Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization.

Multiple choice

Who established the relationship between the pathogen and disease?

  1. Koch

  2. Jenner

  3. Pasteur

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

The postulates were formulated by Robert Koch and Friedrich Loeffler in 1884, based on earlier concepts described by Jakob Henle, and refined and published by Koch in 1890. Koch applied the postulates to describe the etiology of cholera and tuberculosis.

Multiple choice

Mendel's laws were rediscovered by

  1. Lamarck, de Vries and Correns

  2. Hugo de Vries, Correns and Tschermak

  3. Morgan, Beadle and Tatum

  4. Hugo de Vries, Morgan and Correns
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mendel's laws were rediscovered by Hugo de Vries, Correns and Tschermak.

Multiple choice

DNA cloning technique was invented by

  1. Mendel and Cohen

  2. Boyer and Cohen

  3. Boyer and Hargobind Khurana.

  4. Hershey and Chase
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Boyer and Cohen invented the DNA cloning technique that gave birth to an important branch of science called genetic engineering.

Multiple choice

One gene-one enzyme hypothesis was given by

  1. Beadle-Tatum

  2. Hershey-Chase

  3. Watson-Crick

  4. Avery-MacLeod-Mc Carty
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Beadle-Tatum worked on Neurospora crassa to show that one gene is responsible for producing one enzyme.