Geography 2022 Paper I 50 marks 150 words Compulsory Discuss

Q1

Answer the following in about 150 words each: (a) Define 'speleothem'. Discuss the various forms and features of speleothems. (10 marks) (b) What are the high altitude environmental hazards? Explain with suitable examples. (10 marks) (c) What is pollution dome? Discuss its formation and impacts. (10 marks) (d) When corals are affected by stress it causes them to turn completely white. Explain the reasons of such an occurrence. (10 marks) (e) Well developed soils typically exhibit distinct layers in their soil profile. Elaborate. (10 marks)

हिंदी में प्रश्न पढ़ें

निम्नलिखित में से प्रत्येक का उत्तर लगभग 150 शब्दों में दीजिए : (a) 'स्पेलियोथेम' को परिभाषित कीजिए । स्पेलियोथेम्स के विभिन्न रूपों एवं लक्षणों की चर्चा कीजिए । (10 अंक) (b) उच्च ऊँचाई पर्यावरणीय खतरे क्या हैं ? उचित उदाहरणों द्वारा वर्णन कीजिए । (10 अंक) (c) प्रदूषण गुंबद क्या है ? इसके निर्माण एवं प्रभावों की चर्चा कीजिए । (10 अंक) (d) जब प्रवाल तनाव से प्रभावित होते हैं तो तनाव के कारण पूर्णतः से श्वेत हो जाते हैं । इस घटना के कारणों की व्याख्या कीजिए । (10 अंक) (e) पूर्णतः से विकसित मृदा में आम तौर पर मृदा परिछेदिका के विभिन्न स्तर स्पष्ट प्रदर्शित होते हैं । विस्तृत वर्णन कीजिए । (10 अंक)

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Directive word: Discuss

This question asks you to discuss. The directive word signals the depth of analysis expected, the structure of your answer, and the weight of evidence you must bring.

See our UPSC directive words guide for a full breakdown of how to respond to each command word.

How this answer will be evaluated

Approach

The directive 'discuss' demands a comprehensive treatment with definition, elaboration, and critical coverage across all five sub-parts. Allocate approximately 30 words/2 minutes per sub-part (equal marks distribution), structuring each as: brief definition → key forms/features/processes → 1-2 Indian/global examples. No introduction or conclusion needed for this fragmented format; maximize content density within word limits.

Key points expected

  • (a) Speleothem: Define as secondary mineral deposits in caves; identify forms (stalactites, stalagmites, columns, flowstones, helictites) with their specific features and formation mechanisms via carbonate precipitation
  • (b) High altitude hazards: Cover hypoxia/AMS, UV radiation, cold injuries (frostbite, hypothermia), avalanches, and terrain instability; exemplify with Everest/K2 deaths, Siachen Glacier conditions, or Ladakh tourism incidents
  • (c) Pollution dome: Define as trapped pollutants under thermal inversion; explain formation via subsidence inversion, topography, and stable conditions; impacts on health (respiratory), visibility, and urban heat island—cite Delhi winter smog or Mexico City
  • (d) Coral bleaching: Explain expulsion of zooxanthellae symbionts due to thermal stress, nutrient pollution, or acidification; cite 2016/2020 Great Barrier Reef mass bleaching or Gulf of Mannar/Palk Bay incidents
  • (e) Soil horizons: Elaborate O-A-E-B-C-R sequence; describe horizon-specific characteristics (organic accumulation, eluviation/illuviation, weathering zones); reference Indian soil profiles (laterite, alluvial, or black soil)

Evaluation rubric

DimensionWeightMax marksExcellentAveragePoor
Concept correctness25%12.5Precise definitions for all five terms; scientifically accurate explanations of speleothem mineralogy (calcite/aragonite), thermal inversion mechanics, zooxanthellae symbiosis, and pedogenic processes; no conflation of stalactites/stalagmites or bleaching with coral deathBasic definitions correct but minor errors in process explanation (e.g., confusing eluviation/illuviation, oversimplified bleaching mechanism, or generic hazard listing without altitude-specific causation)Fundamental conceptual errors (e.g., defining speleothems as organic formations, confusing pollution dome with heat island, describing coral bleaching as algal growth, or reversing soil horizon sequence)
Map / diagram15%7.5Sketches speleothem cross-section with labeled forms; diagrams thermal inversion/pollution dome vertical profile; illustrates soil horizon layers with depth markers—at least 3 relevant diagrams across parts, neatly labeledOne or two rough sketches (likely soil horizons or basic speleothem forms) with partial labeling; or mentions diagrams without actual drawing; adequate but not enhancing explanation significantlyNo diagrams despite visual suitability; or incorrect diagrams (e.g., drawing coral polyp instead of bleaching process, random topographic map without relevance)
Indian regional examples20%10Specific Indian exemplars: Borra Caves (Andhra) or Belum Caves for speleothems; Siachen/Dras or Rohtang Pass for altitude hazards; Delhi-NCR winter smog for pollution dome; Gulf of Mannar, Lakshadweep, or Andaman bleaching events; laterite soils of Western Ghats or alluvial profiles of Gangetic plainsGeneric or partially correct Indian references (e.g., 'Himalayas' for altitude hazards without specificity, 'Indian cities' for pollution, 'Indian corals' without location); or over-reliance on international examplesNo Indian examples; or factually wrong attributions (e.g., citing Sundarbans for coral reefs, Thar Desert for high altitude hazards, or Mumbai for speleothems)
Spatial analysis20%10Demonstrates spatial reasoning: cave microclimates affecting speleothem growth; latitudinal/altitudinal zonation of hazards; topographic trapping of pollutants in basins/bowl cities; thermal stress gradients causing bleaching (equatorial vs. subtropical); topographic and climatic controls on soil horizon developmentSome spatial awareness (e.g., mentioning 'high altitude' or 'urban' generically) but lacks explicit analysis of spatial patterns, distributions, or geographic controls; descriptive rather than analyticalPurely aspatial treatment; no mention of location, distribution, or geographic variation; treats all phenomena as uniformly occurring without spatial context
Application / policy20%10Connects to applied geography: speleothems as paleoclimate proxies (monsoon reconstruction); altitude hazard mitigation (acclimatization protocols, HAPE/HACE medical response); pollution dome management (GRAP in Delhi, odd-even); coral bleaching response (MPAs, reef restoration, India's National Action Plan on Climate Change); sustainable soil management (ICAR soil health cards)Brief mention of management or conservation without specificity; or generic 'awareness' and 'strict laws' recommendations; no institutional or policy mechanisms namedNo applied dimension; or irrelevant policy suggestions (e.g., suggesting space missions for altitude hazards, industrial relocation for speleothems); complete disconnect from contemporary governance

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