Which one of the following statements about the Industrial Revolution is correct?
- (a)Thomas Savery invented astrolabe
- (b)Thomas Newcomen invented chemical dyes
- (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
- (d)Mathew Boulton discovered the technique of refining gold of impurities
Correct — 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.' Watt's separate condenser (1765) and his rotative sun-and-planet gearing (1781) turned the steam engine from a device that only pumped water out of mines into a rotary prime mover able to drive the spinning, weaving and milling machinery of factories — the technology that powered the Industrial Revolution.
- (a)Thomas Savery invented astrolabe — Thomas Savery patented an early steam-powered pump in 1698 ('The Miner's Friend'), the first commercial steam device — not the astrolabe, which is a medieval astronomical instrument.
- (b)Thomas Newcomen invented chemical dyes — Thomas Newcomen built the atmospheric steam engine (1712) to pump water out of mines; he had nothing to do with chemical dyes.
- (d)Mathew Boulton discovered the technique of refining gold of impurities — Matthew Boulton was Watt's business partner (Boulton & Watt, at the Soho Manufactory near Birmingham), a manufacturer and financier — not a gold-refiner.
The steam engine's evolution drove the Industrial Revolution: Savery's steam pump (1698) and Newcomen's atmospheric engine (1712) could only pump water, but James Watt's separate condenser and rotative gearing delivered continuous rotary power, letting a single engine run the machines of a whole factory.
Only statement (c) is factually correct; (a), (b) and (d) each pair a real Industrial-Revolution figure with a false invention. Recalling Watt's separate condenser/rotative engine, and that Boulton was his manufacturing partner rather than an inventor, settles the choice.
- Thomas Savery: steam-powered pump, patented 1698 ('The Miner's Friend'), the first commercial steam device.
- Thomas Newcomen: atmospheric steam engine, 1712, used to pump water from mines.
- James Watt: separate condenser (1765) and rotative sun-and-planet gear (1781) gave rotary power for factory machinery.
- Matthew Boulton: Watt's partner in Boulton & Watt (Soho Manufactory, Birmingham); manufacturer and financier, not an inventor of gold refining.

- Confusing the contributions of Savery, Newcomen and Watt.
- Treating Matthew Boulton as an inventor rather than Watt's manufacturing partner.
Asked as a 'which statement is correct' item pairing Industrial-Revolution figures with (mostly false) inventions.
Which of the following statements correctly explains the impact of Industrial Revolution on India during the first half of the nineteenth century?
- (a) Indian handicrafts were ruined.
- (b) Machines were introduced in the Indian textile industry in large numbers.
- (c) Railway lines were laid in many parts of the country.
- (d) Heavy duties were imposed on the imports of British manufactures.
Answer(a) Indian handicrafts were ruined.
Same theme of the Industrial Revolution: this UPSC item tests its impact on India (cheap machine-made goods ruined Indian handicrafts), while the NDA item tests the technology — Watt's steam engine — that made that industrial mass production possible.
- practice — not a real PYQ
The separate condenser, which greatly improved the efficiency of the steam engine, was introduced by
- (a)Thomas Newcomen
- (b)Thomas Savery
- (c)James Watt
- (d)Matthew Boulton
Answer(c) James Watt — his 1765 separate condenser transformed the steam engine.
- practice — not a real PYQ
The SI unit of power, the watt, is named after James Watt, who is best known for improving the
- (a)telescope
- (b)steam engine
- (c)spinning jenny
- (d)dynamo
Answer(b) steam engine — Watt's improvements powered the Industrial Revolution.