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
21
Who invented the first battery (Voltaic Pile)?
Answer:
Alessandro Volta
Volta created the first device to provide a steady electric current in 1800.
22
Who was the female mathematician who clarified the laws of physics regarding conservation of energy (Noether's Theorem)?
Answer:
Emmy Noether
Einstein called her the most significant creative mathematical genius thus far produced since the higher education of women began.
23
Who discovered the relationship between current, voltage, and resistance (Ohm's Law)?
Answer:
Georg Ohm
Ohm's Law states that V = IR, a fundamental principle of electronics.
24
Who is known as the 'Father of the Hydrogen Bomb'?
Answer:
Edward Teller
Teller was a theoretical physicist who was a primary driving force behind the development of thermonuclear weapons.
25
Who is credited with discovering Oxygen (independently of Scheele)?
Answer:
Joseph Priestley
Priestley isolated oxygen in 1774 by heating red mercuric oxide.
26
Which scientist discovered the four largest moons of Jupiter?
Answer:
Galileo Galilei
Galileo discovered Io, Europa, Ganymede, and Callisto in 1610, providing evidence against the geocentric model.
27
Who developed the first successful Polio vaccine (oral)?
Answer:
Albert Sabin
Sabin developed the oral polio vaccine (OPV), which was easier to administer than Salk's injection and helped eradicate polio globally.
28
Who discovered the positron (antimatter electron)?
Answer:
Carl Anderson
Anderson discovered the positron in 1932 while studying cosmic rays, confirming Paul Dirac's theoretical prediction.
29
Which mathematician is known as the 'Father of Cybernetics'?
Answer:
Norbert Wiener
Wiener defined cybernetics as the scientific study of control and communication in the animal and the machine.
30
Who is known as the 'Mother of the Hubble' for her work on the Hubble Space Telescope?
Answer:
Nancy Roman
Nancy Grace Roman was NASA's first Chief of Astronomy and a key figure in planning the Hubble Space Telescope.