General Knowledge MCQs
Topic Notes: General Knowledge
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
981
Who formulated the laws of motion and universal gravitation?
Answer:
Isaac Newton
Sir Isaac Newton formulated the three laws of motion and the law of universal gravitation in his work *Principia Mathematica*.
982
Who invented the television?
Answer:
John Logie Baird
John Logie Baird demonstrated the first working television system in 1926.
983
Who is credited with inventing the mobile phone?
Answer:
Martin Cooper
Martin Cooper of Motorola is credited with inventing the first handheld mobile phone and making the first mobile call in 1973.
984
Who developed the first successful polio vaccine?
Answer:
Jonas Salk
Jonas Salk developed the first safe and effective polio vaccine in the 1950s.
985
Who discovered Radium and Polonium?
Answer:
Marie Curie
Marie Curie, along with her husband Pierre, discovered the radioactive elements Radium and Polonium.
986
Who is credited with the invention of the aeroplane?
Answer:
The Wright Brothers
Orville and Wilbur Wright are credited with inventing, building, and flying the first successful motor-operated airplane in 1903.
987
Who invented the printing press?
Answer:
Johannes Gutenberg
Johannes Gutenberg invented the movable-type printing press around 1440, which played a key role in the spread of knowledge.
988
Who invented the steam engine (significant improvements making it practical)?
Answer:
James Watt
While early versions existed, James Watt's improvements in the late 18th century made the steam engine efficient and fundamental to the Industrial Revolution.
989
Who invented the radio?
Answer:
Guglielmo Marconi
Guglielmo Marconi is credited with the invention of the radio and received the Nobel Prize for his work in wireless telegraphy.
990
Who developed the theory of relativity?
Answer:
Albert Einstein
Albert Einstein developed the theory of relativity (Special and General), which revolutionized our understanding of space, time, and gravity.