Scientific Discoveries

Total Questions: 32

2 - Who invented the soda water?

A ) John Pemberton
B ) Coca cola
C ) Joseph Priestley ✅
D ) None of these

3 - Submarine works on which principle

A ) Pascal's law
B ) Bernoulli's theorem
C ) Torricelli's law
D ) None of these (Archimedes principle) ✅

4 - The Pythagorean theorem related to which shape?

A ) Triangle ✅
B ) Square
C ) Rectangle
D ) Circle

5 - Which of the following radiation has the most energetic photon?

A ) Gamma rays ✅
B ) Beta rays
C ) Alpha rays
D ) None of these

6 - Which material provides a shield against gamma rays:

A ) Wood
B ) Lead ✅
C ) Water
D ) None of these

7 - Radiation was discovered by -----:

A ) Henry Becquerel ✅
B ) Isaac Newton
C ) Albert Einstein
D ) Johannes Gutenberg

8 - Who invented a system of reading and writing for the blind?

A ) Louis pasteur
B ) Louis Braille ✅
C ) Sir Humphrey Davey
D ) Helen Keller

9 - Who among the following invented bifocal spectacles and lightning rod?

A ) Benjamin Franklin ✅
B ) Galileo
C ) Thomas Edison
D ) James Madison

Explanation:

Benjamin Franklin, due to his invention of the lightning rod, is known as the:

Father of Electricity

📚 Explanation :

  • ✅Benjamin Franklin conducted famous experiments with lightning and electricity using a kite during a thunderstorm.
  • ✅His invention of the lightning rod proved that lightning is a form of electricity.
  • ✅Because of his pioneering work in the study and practical use of electricity, he is often referred to as the Father of Electricity .

10 - Benjamin Franklin due to his invention of lighting rod is known as father of :

A ) Electricity ✅
B ) Magnetism
C ) Thunderbolt
D ) None of these

Explanation:

Benjamin Franklin, due to his invention of the lightning rod, is known as the:

Father of Electricity

📚 Explanation :

  • ✅Benjamin Franklin conducted famous experiments with lightning and electricity using a kite during a thunderstorm.
  • ✅His invention of the lightning rod proved that lightning is a form of electricity.
  • ✅Because of his pioneering work in the study and practical use of electricity, he is often referred to as the Father of Electricity .

11 - Superconductor was invented by -------:

A ) Heike Kimberling
B ) Walter Meissner
C ) Both A and B ✅
D ) None of these

12 - Who invented dynamite?

A ) Alferd Nobel ✅
B ) Edison
C ) Newton
D ) None of these

13 - Iodine was discovered by -----:

A ) B. Courtois ✅
B ) H. Devy
C ) C. Monssder
D ) S. Jennant

14 - Iodine was discovered by -----:

A ) B. Courtois ✅
B ) H. Devy
C ) C. Monssder
D ) S. Jennant

15 - Who discovered the first vaccine?

A ) Einstein
B ) Edward Jenner ✅
C ) Albert Sabin
D ) Jonas Salk

17 - Treatment through vaccination was founded by -----:

A ) Edward Jenner ✅
B ) Jonas Salk
C ) Louis pasteur
D ) None of these

18 - Ronald Ross discovered the cause of ------:

A ) Malaria ✅
B ) Polio
C ) AIDS
D ) None of these

19 - Which of the following Discoveries in 1928 brought great revolution in medical history?

A ) Vitamin C
B ) Aspirin
C ) Penicillin ✅
D ) None of these

20 - Penicillin was discovered by ----:

A ) Alexander flaming ✅
B ) Frederick Banting and Charles Best
C ) Robert koch
D ) Edward Jenner

21 - Insulin was discovered by ------

A ) Frederick Banting and Charles Best ✅
B ) Alexander flaming
C ) Robert koch
D ) Joseph Lister

22 - In which year was insulin discovered?

A ) 1910
B ) 1921 ✅
C ) 1935
D ) 1942

23 - Who says that microbes are animalcule?

A ) Mendel
B ) Darwin
C ) Leeuwenhoek ✅
D ) Louis pasteur

24 - Who discovered DNA?

A ) Watson and crick ✅
B ) Charles Darwin
C ) Louis pasteur
D ) None of these

25 - Stethoscope was invented by ------

A ) Martin cooper
B ) Robert Ledley
C ) Steven Sasson
D ) Rene Laennee ✅

26 - Battery was invented by ----:

A ) Excide
B ) Volta ✅
C ) Fermi
D ) Maiman

27 - In which year Graham bell invented telephone -----:

A ) 1776
B ) 1876 ✅
C ) 1976
D ) None of these

28 - Radio was discovered by

A ) Nikola Tesla
B ) Guglielmo Marconi ✅
C ) Thomas Edison
D ) James Clerk Maxwell

29 - In which year was the radio discovered?

A ) 1895 ✅
B ) 1901
C ) 1879
D ) 1910

30 - The printer was discovered by

A ) Charles Darwin
B ) Thomas Edison
C ) Blaise Pascal
D ) Johannes Gutenberg ✅

31 - In which year was the printer discovered?

A ) 1440
B ) 1460 ✅
C ) 1605
D ) 1701

32 - First working laser developed by -----:

A ) Theodore Maiman ✅
B ) Max Planck
C ) Robert Boyle
D ) None of these