Scientific Revolution and Enlightenment is part of World History. Below are notes on 43 sub-topics, followed by practice MCQs from State PSC and UPSC papers.
Development of the Scientific Method emerged during the Scientific Revolution and Enlightenment.
- Empiricism
Advocate
Francis Bacon (England).
Core Idea
Knowledge derived primarily from sensory experience, observation, and experimentation.
Method
Inductive reasoning – moving from specific observations to general conclusions.
Key Work
*Novum Organum*.
Famous Quote
"Knowledge is Power" (attributed to Bacon), emphasizing practical application of knowledge.
- Rationalism
Advocate
René Descartes (France).
Core Idea
Knowledge derived primarily from reason, logic, and innate ideas, independent of sensory experience. of the transatlantic slave trade to fulfill labor demands; global population increase due to new food crops from the Americas (e.g., potatoes, maize).
- Economic Impact: Shift in global trade patterns, emergence of new plantation economies in the Americas, and wealth accumulation in Europe.
Method
Deductive reasoning – moving from general principles to specific conclusions.
Key Work
*Discourse on Method*.
Famous Concept
"Cogito, ergo sum" ("I think, therefore I am"), establishing self-evident truth through doubt.
Impact of Enlightenment on human rights, education, and social reforms
- Enlightenment emphasized natural rights (life, liberty, property) articulated by Locke.
- Advocated for separation of powers (Montesquieu) and freedoms of speech, religion (Voltaire).
- Inspired the American Declaration of Independence (1776) and French Declaration of the Rights of Man and of the Citizen (1789).
- Challenged absolute monarchies and divine right, promoting popular sovereignty (Rousseau).
- Pioneered calls for judicial reform, humane punishment (Beccaria), and religious tolerance.
- Promoted reason, critical thinking, and the dissemination of knowledge (e.g., Diderot's Encyclopédie).
- Laid groundwork for universal, secular education ideals, though largely unrealized during the period.
- Influenced early abolitionist movements and arguments for women's rights (Mary Wollstonecraft).
- During the mid-19th century Industrial Revolution, the average life span of workers in Manchester was 17 years.
- Passenger trains were introduced in England in 1825.
Ptolemy
Ancient Greek-Roman astronomer; established the geocentric model (Earth-centered universe), which was dominant for over 1400 years.
Nicolaus Copernicus
Polish astronomer; proposed the heliocentric model (Sun-centered universe) where Earth and other planets revolve around the Sun, challenging the Ptolemaic view. Published "De revolutionibus orbium coelestium" in 1543.
Johannes Kepler
German astronomer; discovered the three laws of planetary motion, describing elliptical orbits of planets around the Sun.
Galileo Galilei
Italian astronomer and physicist; made significant telescopic observations (e.g., moons of Jupiter, phases of Venus), which provided strong evidence supporting the Copernican heliocentric model. Faced the Inquisition for his views.
Isaac Newton
English physicist and mathematician; formulated the laws of motion and the law of universal gravitation, explaining why planets orbit the Sun and unifying terrestrial and celestial mechanics.
Empiricism & Rationalism
Shifted knowledge acquisition from dogma/ tradition to observation, experimentation, and reason (Bacon, Descartes).
Scientific Method
Established systematic inquiry: hypothesis, controlled experiment, data analysis, conclusion.
Mechanistic Universe
Promoted view of cosmos as predictable, governed by universal mathematical laws (Newton, Galileo).
Decline of Superstition
Fostered skepticism towards supernatural explanations, prioritizing natural causes.
Rise of Scientific Institutions
Led to formation of academies (e.g., Royal Society) for research and dissemination.
Impact on Religion
Challenged literal interpretations of scripture, contributing to Deism (God as 'clockmaker').
Application of Reason to Society
Extended scientific rationalism to analyze and reform social, political, economic systems.
Individual Rights
Emphasized natural rights (life, liberty, property) inherent to all humans (Locke).
Separation of Powers
Advocated for checks and balances within government to prevent tyranny (Montesquieu).
Popular Sovereignty
Asserted government legitimacy derives from the consent of the governed (Rousseau, Locke).
Religious Tolerance & Secularism
Promoted freedom of belief and the separation of church and state.
Economic Liberalism
Laid foundations for free markets and limited government intervention (Adam Smith's *Wealth of Nations*).
Progress & Human Perfectibility
Fostered belief in humanity's capacity for societal improvement through reason.
Critique of Authority
Challenged absolute monarchy, hereditary privilege, and traditional church dominance.
- Combined
Legacy
on
Modern
Worldviews
Foundation of Modern Science & Technology
Provided epistemological and methodological basis for scientific and technological advancement.
Democratic Governance
Underpinned ideals of constitutionalism, human rights, representative government, and rule of law (e.g., American, French Revolutions).
Individual Liberty & Human Rights
Established these as core values in modern legal, political, and ethical systems.
Secularism
Influenced the decline of religious dominance in public life and governance, promoting a neutral state.
Capitalism
Provided ideological framework for economic systems based on private property, free enterprise, and market forces.
Universalism
Fostered belief in universal reason, justice, and human rights applicable across cultures and nations.
Critical Thinking
Encouraged rational inquiry, debate, and skepticism against dogma, fostering a "public sphere."
Major Enlightenment thinkers and their contributions (Locke, Montesquieu, Rousseau, Voltaire, Adam Smith)
- John Locke (English):
- Key works: *Two Treatises of Government*, *An Essay Concerning Human Understanding*.
- Core ideas: Mind as a *tabula rasa* (blank slate).
- Natural Rights: Life, Liberty, Property. Government's role is to protect these. (Equality not one of his primary three enumerated natural rights).
- Government by consent of the governed; right to revolution if government becomes tyrannical.
- Baron de Montesquieu (French):
- Key work: *The Spirit of the Laws*.
- Core idea: Separation of Powers (legislative, executive, judicial branches) and checks and balances to prevent tyranny and preserve liberty.
- Jean-Jacques Rousseau (Genevan/Swiss, prominent in French thought):
- Key works: *The Social Contract*, *Discourse on the Origin of Inequality*, *A Discourse on Political Economy*, *Emile, or On Education*.
- Famous quote: "Man is born free and everywhere he is in chains." (from *The Social Contract*).
- Core ideas: General Will, Popular Sovereignty. Advocated for direct democracy. Critiqued private property as a source of inequality.
- Voltaire (François-Marie Arouet) (French):
- Prominent Enlightenment writer, historian, and philosopher.
- Key works: *Candide*, *Letters on England*.
- Core ideas: Advocated for civil liberties, including freedom of speech, freedom of religion, and separation of church and state. Criticized absolute monarchy and intolerance.
- Adam Smith (Scottish):
- Key work: *An Inquiry into the Nature and Causes of the Wealth of Nations*.
- Core ideas: Founder of modern economics. Advocated for *laissez-faire* economics (minimal government intervention). Concept of the "Invisible Hand" guiding free markets through individual self-interest.
Nature and origins of the Scientific Revolution
- John Guttenberg: Printing Press
- W.K. Roentgen: X-Ray
- Michael Faraday: Dynamo
- Alexander Graham Bell: Telephone
- Thomas Savery (1698): Built "Miner's Friend" model steam engine to drain mines.
- John Kay: Designed the 'flying shuttle loom'.
8. American Revolution and Formation of USA
Practice MCQs: Scientific Revolution and Enlightenment
Development of the Scientific Method: Empiricism (Bacon) and Rationalism (Descartes)
Who said 'Knowledge is Power'?
Asked in: APPSC Gazated Posts 2012
- Shakespeare
- Milton
- Francis Bacon
- Jawaharlal Nehru
Show answer
Answer: C. Francis Bacon
The famous aphorism "scientia potentia est," which translates to "knowledge is power," is most commonly attributed to the English philosopher, scientist, and writer Francis Bacon. He used a similar phrase in his work "Meditationes Sacrae" (1597).
Impact of Enlightenment on human rights, education, and social reforms
During the mid 19th century Industrial Revolution, the average life span of workers in Manchester was
Asked in: UPSC CDS 1 2017
- 17 years
- 30 years
- 55 years
- 62 years
Show answer
Answer: A. 17 years
Historical accounts, particularly from sources like Friedrich Engels' The Condition of the Working Class in England (1844), documented the extremely poor living and working conditions of factory workers during the Industrial Revolution in cities like Manchester.
In which of the following years were passenger trains introduced in England ?
Asked in: UPSC NDA 2 2020
- 1823
- 1825
- 1848
- 1861
Show answer
Answer: B. 1825
The Stockton and Darlington Railway, which opened in England in 1825, was the world's first public railway to use steam locomotives. While primarily intended for freight, it also began carrying passengers, marking the effective introduction of passenger trains.
Key figures and astronomical breakthroughs: Copernicus, Kepler, Galileo, Newton
Which one of the following astronomers proved that the Earth and other planets revolve around the Sun ?
Asked in: UPSC NDA 1 2023
- Copernicus
- Kepler
- Galileo
- Newton
Show answer
Answer: C. Galileo
Galileo Galilei provided crucial observational evidence using his telescope that supported the heliocentric model, effectively proving that Earth and other planets revolve around the Sun against the prevailing geocentric view.
The laws of planetary motion were discovered by
Asked in: Assistant Conservator of Forest Exam 2019
- Kepler
- Copernicus
- Newton
- Galileo
Show answer
Answer: A. Kepler
Kepler's laws are fundamental to understanding celestial mechanics: 1. The orbit of every planet is an ellipse with the Sun at one of the two foci. 2. A line joining a planet and the Sun sweeps out equal areas during equal intervals of time. 3. The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.
Who discovered the laws of planetary motion?
Asked in: Forest Officer (RFO) 2018
- Galileo Galilei
- Nicolaus Copernicus
- Johannes Kepler
- None of them
Show answer
Answer: C. Johannes Kepler
Johannes Kepler formulated the laws of planetary motion.
Who among the following is credited with establishing the older theory that the sun goes around the earth?
Asked in: J.E (Electrical 2020) 2020
- Copernicus
- Ptolemy
- Galileo
- Bhaskara
Show answer
Answer: B. Ptolemy
The geocentric model, where the Earth is considered the center of the universe and celestial bodies revolve around it, was the dominant astronomical model for centuries. Ptolemy's model was the most sophisticated and influential version of this theory.
Legacy of the Scientific Revolution and Enlightenment on modern worldviews
Who invented the ball point pen?
Asked in: APPSC Gazated Posts 2012
- Watermen
- Oscar
- Wilson
- Lazo Biro
Show answer
Answer: D. Lazo Biro
The modern ballpoint pen was invented by Hungarian-Argentine inventor László Bíró. He patented the first commercially successful ballpoint pen in
Major Enlightenment thinkers and their contributions (Locke, Montesquieu, Rousseau, Voltaire, Adam Smith)
Who among the following is the author of the book, The Social Contract?
Asked in: UPSC CDS 2 2017
- Voltaire
- Hobbes
- Locke
- Rousseau
Show answer
Answer: D. Rousseau
Jean-Jacques Rousseau was a Genevan philosopher whose political philosophy influenced the Enlightenment in France and across Europe, as well as aspects of the French Revolution.
Who among the following wrote the famous text 'A Discourse on Political Economy'?
Asked in: UPSC NDA 2 2021
- Montesquieu
- Voltaire
- Rousseau
- Adam Smith
Show answer
Answer: C. Rousseau
'A Discourse on Political Economy' (Discours sur l'économie politique) is an article written by Jean- Jacques Rousseau for the Encyclopédie, published in 1755. In this work, Rousseau distinguishes between domestic economy and political economy and discusses the concept of the general will in the context of the state.
Who wrote the "Discourse on the Origin of Inequality"?
Asked in: PPSC CS Prelims 2018
- Voltaire
- Jean-Jacques Rousseau
- Montesquieu
- Locke
Show answer
Answer: B. Jean-Jacques Rousseau
Jean-Jacques Rousseau (1712–1778) was a Genevan philosopher, writer, and composer of the 18th century. His "Discourse on Inequality" (published in 1755) examines the origins of social inequality and the foundations of political society, arguing that inequality arises from the formation of civil society and private property, not from nature.
According to Locke, which one of the following is not a natural right?
Asked in: ae 2020
- Liberty
- Equality
- Property
- Life
Show answer
Answer: B. Equality
ae -2025 John Locke identified life, liberty, and property as natural rights. Equality was a concept underpinning his philosophy but not a distinct natural right he enumerated.
Who said that "Man is born free and everywhere he is in chains"?
Asked in: ASCO 2014
- Locke
- Aristotle
- Marx
- Rousseau
Show answer
Answer: D. Rousseau
HORTICULTURE DEVELOPMENT OF‐ FICER(HDO) -2015 The quote "Man is born free and everywhere he is in chains" is attributed to Jean-Jacques Rousseau.
The 18th century philosopher Rousseau was
Asked in: ASSISTANT AUDIT OFFICER 2017 18 2017
- French
- Russian
- British
- Belgian
Show answer
Answer: A. French
Rousseau's nationality is often considered Genevan, but his philosophical and political impact was predominantly within the French context.
Voltaire was a
Asked in: Civil Judge (Junior Division) Exam 2013
- Greek Philosopher
- British lawyer
- French writer and philosopher
- American jurist
Show answer
Answer: C. French writer and philosopher
Voltaire was a key figure of the Enlightenment period, known for his critical writings and advocacy of liberal ideas.
The eighteenth century philosopher Rousseau was
Asked in: Forest Officer (RFO) 2018
- French
- Russian
- British
- Belgian
Show answer
Answer: A. French
Jean-Jacques Rousseau was a prominent philosopher of the Enlightenment, primarily associated with French intellectual movements.
Who said that "Man is born free and everywhere he is in chains"? - [A] Locke - [B] Aristotle - [C] Marx - [D] Rousseau
Asked in: HORTICULTURE DEVELOPMENT OF‐ FICER(HDO) 2015
- Locke
- Aristotle
- Marx
- Rousseau
Show answer
Answer: D. Rousseau
Rousseau argued that in a natural state, humans are free and equal, but the development of society and the institution of private property lead to inequality, dependence, and oppression, thus enslaving individuals.
Who wrote the book named ‘Social Contract’ ?
Asked in: Jail Warders Exam 2022
- Voltaire
- Thomas Paine
- Montesquieu
- Rousseau
Show answer
Answer: D. Rousseau
The book ‘Social Contract’ was authored by Rousseau.
Who said that "Man is born free and everywhere he is in chains"?
Asked in: POST GRADUATE TEACHER (PGT) 2018
- [A] Locke
- [B] Aristotle
- [C] Marx
- [D] Rousseau
Show answer
Answer: D. [D] Rousseau
This iconic quote is from the opening line of Jean- Jacques Rousseau's influential treatise "The Social Contract," published in 1762. It encapsulates his critique of societal structures that he believed inhibited human freedom.
Which one of the following pairs is correctly matched ?
Asked in: ro aro 2024
- Montesquieu - Social Contract
- Rousseau - Divine Comedy
- Machiavelli - The Prince
- Edmund Burke - Utopia
Show answer
Answer: C. Machiavelli - The Prince
Matching authors with their significant works is a common UPSC question format. It tests knowledge of political thought, literature, and history.
Nature and origins of the Scientific Revolution
Match the following a. John Guttenberg 1. Telephone b. W.K. Roentgen 2. Printing Press c. Michael Faraday 3. X-Ray d. Alexander Graham Bell 4. Dynamo
Asked in: CGPSC Prelims Exam 2013
- 1 2 3 4
- 2 3 1 4
- 3 4 1 2
- 2 3 4 1
Show answer
Answer: D. 2 3 4 1
Matching inventors with their key inventions: Gutenberg-Printing Press, Roentgen-X-Ray, Faraday-Dynamo, Bell-Telephone.
Who among the following built a model steam engine in 1698 called "Miner's Friend" to drain mines ?
Asked in: UPSC NDA 1 2018
- Thomas Savery
- Thomas Newcomen
- James Watt
- Richard Arkwright
Show answer
Answer: A. Thomas Savery
Thomas Savery was an English inventor and engineer who patented the first practical steam engine, which he named the "Miner's Friend", in 1698. This engine used steam pressure and atmospheric pressure to pump water, primarily intended for draining mines.
During the Industrial Revolution, who among the following designed the 'flying shuttle loom'?
Asked in: UPSC NDA 2 2021
- Samuel Crompton
- Edmund Cartwright
- John Kay
- Richard Arkwright
Show answer
Answer: C. John Kay
The flying shuttle significantly increased the speed of weaving.
Who among the following invented the flying shuttle?
Asked in: UPSC NDA 2 2022
- James Hargreaves
- John Kay
- Richard Arkwright
- Humphry Davy
Show answer
Answer: B. John Kay
John Kay invented the flying shuttle, a pivotal tool in the mechanization of weaving.
Which of the following statements about the technological innovations during the Industrial Revolutions are correct ? 1. Mule was the nickname for a machine invented in 1779, that allowed the spinning of strong and fine yarn. 2. Water Frame, invented in 1769 by Richard Arkwright, made it possible to weave pure cotton clothes. 3. Power loom, invented by Edmund Cartwright in 1787, could be used to weave any kind of materials. Select the correct answer using the code given below :
Asked in: UPSC NDA 2 2023
- 1 and 2 only
- 1, 2 and 3
- 2 and 3 only
- 3 only
Show answer
Answer: B. 1, 2 and 3
Key inventions like the Spinning Mule, Water Frame, and Power Loom significantly mechanized the textile industry during the Industrial Revolution, increasing productivity and changing manufacturing processes.
Which one of the following statements about the Industrial Revolution is correct ?
Asked in: UPSC NDA 2 2024
- Thomas Savery invented astrolabe
- Thomas Newcomen invented chemical dyes
- James Watt's invention converted the steam engine from being a mere pump into one which would provide energy to power machines in factories
- Mathew Boulton discovered the technique of refining gold of impurities
Show answer
Answer: C. James Watt's invention converted the steam engine from being a mere pump into one which would provide energy to power machines in factories
James Watt's key improvements to the steam engine, particularly the invention of the separate condenser, significantly increased its efficiency and versatility. This made the steam engine capable of producing rotary motion and thus suitable for powering a wide range of machinery in factories, which was a crucial development during the Industrial Revolution.
Which is the one considered to be more important to study the History of science is
Asked in: TNPSC CS Prelims 2022
- Antiquarian curiosity
- Logical reasoning
- Scientific knowledge
- Conjunction with philosophy
Show answer
Answer: D. Conjunction with philosophy
- History of science is not just a chronology of facts. - Philosophy of science provides a framework for understanding the development and nature of scientific knowledge. - The interplay between historical context and philosophical ideas is crucial for a deep study.
Who among the following innovated road construction method during Industrial Revolution? (1) McAdam (3) Charles Goodyear (2) Abraham Darby (4) Henry Court
Asked in: Head Master Praveshika School (Sanskrit Edu.) 2021
- McAdam
- Abraham Darby
- Charles Goodyear
- Henry Court
Show answer
Answer: A. McAdam