← All questionsGS3 · 2024 · Science & Technology ·Freshwater Technologies
QUESTION PYQ 14
GS3
15 marks

The world is facing an acute shortage of clean and safe freshwater. What are the alternative technologies which can solve this crisis? Briefly discuss any three such technologies citing their key merits and demerits. What are asteroids? How real is the threat of them causing

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11 min
250 words
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What the examiner wants

For Freshwater Technologies, discuss in sequence: first, What are the alternative technologies which can solve this crisis; then, What are asteroids. Keep evidence and the conclusion tied to these exact limbs.

DiscussExplain the different sides of the issue, use evidence, and finish with a balanced view.

Demand-wise check

  1. 1What are the alternative technologies which can solve this crisis?≈65 words
  2. 2What are asteroids?≈65 words
  3. 3How real is the threat of them causing≈65 words

Open in about 30 words and close in about 30.

Answer plan

Definition/locationControlling physical processesSpatial patternConsequences/applicationLabelled map or process sketch for Freshwater Technologies

Where marks usually go

  • Over-writing ‘What are the alternative technologies which can solve this crisis’ while reducing ‘What are asteroids’ to a token paragraph
  • Describing Freshwater Technologies without showing the physical mechanism or spatial relationship that explains the pattern asked in the question

Value addition

  • Freshwater Technologies: working-principle schematic — input → process → output/application → risk/limit
    → Draw it in the body, next to the point it supports.

Official source anchors

These are authoritative sources selected for this exact PYQ. Where a card is an official-domain anchor rather than a fact-level citation, verify the precise provision, definition or data point on the linked source before using it.