UPSC Mains 2019 GS Paper 3 Q5: model answer
How was India benefitted from the contributions of Sir M. Visvesvaraya and Dr. M. S. Swaminathan in the fields of water engineering and agricultural science respectively?
What the question wants
Explain how India gained from Visvesvaraya's water engineering and Swaminathan's agricultural science.
How to structure it
Two people, two fields, one link.
- Visvesvaraya
- Swaminathan
- The common thread
How to think it through
Visvesvaraya: automatic sluice gates (Khadakwasla, 1903), block irrigation system, Krishnaraja Sagar dam, flood protection for Hyderabad; Engineers' Day is 15 September; Bharat Ratna 1955. Swaminathan: brought dwarf wheat to India, father of the Green Revolution, National Commission on Farmers (2004–06), evergreen revolution; Bharat Ratna 2024.
Model answer
India celebrates Engineers' Day on 15 September, the birthday of Sir M. Visvesvaraya. Half a century after his work, M.S. Swaminathan helped India grow the grain that his canals could water.
Visvesvaraya and water engineering
- Automatic sluice gates, first used at Khadakwasla near Pune (1903), to store more water safely.
- Block system of irrigation in the Deccan, sharing canal water fairly.
- Krishnaraja Sagar dam on the Kaveri, irrigating the Mandya region.
- Flood protection and drainage for Hyderabad after the 1908 Musi flood.
- Bharat Ratna, 1955.
Swaminathan and agricultural science
- Brought Mexican dwarf wheat to India and adapted it; the Green Revolution of the late 1960s.
- Built research and extension institutions as head of ICAR.
- Chaired the National Commission on Farmers (2004–06): MSP at C2 plus 50%.
- Coined the evergreen revolution: productivity without ecological harm.
- Bharat Ratna, 2024.
The common thread
Both used science for the farmer and built institutions that outlived them: one stored the water, the other made each drop yield more grain. A student should see them as two halves of one food-security story.
Draw: A two-panel timeline: Visvesvaraya (1903–1932) and Swaminathan (1960s–2024).
Keywords, cases and data to drop in
Visvesvaraya, Khadakwasla 1903, block system, KRS dam, Engineers' Day, Swaminathan, dwarf wheat, NCF 2004–06, C2+50%, evergreen revolution, Bharat Ratna.
Where most answers lose marks
- Writing biographies. Keep each point tied to what India gained.
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Question text as printed in the official UPSC Civil Services (Main) question paper. The model answer is original Battle IAS work; use it to learn structure, not to memorise.
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