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
961
Which city hosts the headquarters of the North Atlantic Treaty Organization (NATO)?
Answer:
Brussels
The headquarters of NATO is located in Brussels, Belgium.
962
Where is the headquarters of the United Nations (UN) located?
Answer:
New York
The headquarters of the United Nations is located in New York City, USA. It was completed in 1952.
963
Who discovered the electron microscope?
Answer:
Ernst Ruska and Max Knoll
Ernst Ruska and Max Knoll constructed the first prototype electron microscope in 1931.
964
Who is credited with the invention of Portland Cement?
Answer:
Joseph Aspdin
Joseph Aspdin, a British bricklayer, patented Portland Cement in 1824.
965
Who invented the Geiger Counter?
Answer:
Hans Geiger
Hans Geiger invented the Geiger counter to measure ionizing radiation.
966
Who invented the cinema (Cinematograph)?
Answer:
The Lumière Brothers
Auguste and Louis Lumière patented the Cinematograph in 1895, a device that could record, develop, and project motion pictures.
967
Who invented the transformer and electric motor?
Answer:
Michael Faraday
Michael Faraday discovered electromagnetic induction, which led to the invention of the electric motor and the transformer.
968
Who invented the sewing machine?
Answer:
Elias Howe
While others had early designs, Elias Howe was awarded the first U.S. patent for a sewing machine using a lockstitch design in 1846.
969
Who invented the helicopter?
Answer:
Igor Sikorsky
Igor Sikorsky is credited with designing and flying the first viable American helicopter, the VS-300, in 1939.
970
Who discovered the law of buoyancy (Eureka moment)?
Answer:
Archimedes
Archimedes discovered the principle of buoyancy (Archimedes' principle) allegedly while taking a bath.