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
101
Who invented the saxophone?
Answer:
Adolphe Sax
Adolphe Sax, a Belgian instrument maker, invented the saxophone in the 1840s.
102
Who invented the Bunsen burner?
Answer:
Robert Bunsen
Robert Bunsen improved the heating burner for chemistry laboratories in 1855, creating the clean, hot flame known today.
103
Who invented the hovercraft?
Answer:
Christopher Cockerell
Sir Christopher Cockerell invented the hovercraft in the 1950s, a vehicle capable of travelling over land, water, mud, ice, and other surfaces.
104
Who discovered the neutron?
Answer:
James Chadwick
James Chadwick discovered the neutron in 1932, a neutral particle in the atomic nucleus, for which he won the Nobel Prize.
105
Who invented the first safety razor with disposable blades?
Answer:
King Camp Gillette
King Camp Gillette invented the safety razor with disposable blades in 1901, changing personal grooming habits.
106
Who is known as the 'Father of the Atomic Bomb'?
Answer:
J. Robert Oppenheimer
Oppenheimer was the director of the Los Alamos Laboratory during the Manhattan Project, which developed the first nuclear weapons.
107
Who invented the Braille system for the blind?
Answer:
Louis Braille
Louis Braille invented the tactile writing system used by people who are visually impaired in 1824 at the age of 15.
108
Who invented the jet engine?
Answer:
Frank Whittle
Sir Frank Whittle (and independently Hans von Ohain) invented the turbojet engine, revolutionizing aviation.
109
Who invented the process of vulcanization for rubber?
Answer:
Charles Goodyear
Charles Goodyear developed vulcanization in 1839, a chemical process that makes rubber more durable and heat-resistant.
110
Who invented the Geiger counter to measure radiation?
Answer:
Hans Geiger
Hans Geiger invented the device in 1908 (later improved by Walther Müller) to detect and measure ionizing radiation.