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
71
Who was the Danish physicist who proposed a model of the atom with electrons in discrete orbits?
Answer:
Niels Bohr
The Bohr model was a pivotal step in quantum mechanics, explaining how electrons can have stable orbits around the nucleus.
72
Who discovered the principle of buoyancy while taking a bath?
Answer:
Archimedes
Archimedes allegedly shouted 'Eureka!' upon realizing that the water displaced by his body was equal to the volume of his body submerged.
73
Who is the physicist known for the uncertainty principle?
Answer:
Werner Heisenberg
Heisenberg's Uncertainty Principle states that one cannot simultaneously know the exact position and momentum of a particle.
74
Which mathematician and writer is considered the first computer programmer?
Answer:
Ada Lovelace
Ada Lovelace recognized that Babbage's Analytical Engine had applications beyond pure calculation and wrote the first algorithm intended for it.
75
Who formulated the laws of planetary motion?
Answer:
Johannes Kepler
Kepler used Tycho Brahe's data to discover that planets move in elliptical orbits, not perfect circles.
76
Which scientist developed the first successful polio vaccine?
Answer:
Jonas Salk
Jonas Salk developed the inactivated polio vaccine (IPV) in the 1950s, which helped virtually eliminate the disease in many parts of the world.
77
Who was the primatologist who transformed our understanding of chimpanzees?
Answer:
Jane Goodall
Goodall's long-term study at Gombe Stream National Park revealed that chimpanzees make tools, hunt for meat, and have complex social structures.
78
Who is known for his work in classical conditioning, famously using dogs?
Answer:
Ivan Pavlov
Pavlov won a Nobel Prize for his work on digestion but is most famous for demonstrating how dogs could be conditioned to salivate at the sound of a bell.
79
Which scientist is considered the 'Father of Genetics' for his experiments with pea plants?
Answer:
Gregor Mendel
Mendel established the laws of inheritance (dominant and recessive traits) through his meticulous work with pea plants.
80
Who conducted the famous kite experiment to demonstrate the electrical nature of lightning?
Answer:
Benjamin Franklin
Benjamin Franklin's experiment in 1752 helped prove that lightning is a form of electricity and led to the invention of the lightning rod.