CBSE Class 10/Overview
Curriculum 2026–27
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Social ScienceCh-6 15 min comprehensive revision
NCERT Class 10 Social Science — Chapter 6

Resources and Development

Classification of resources (origin, exhaustibility, ownership, status of development), Sustainable development, Rio Earth Summit 1992 & Agenda 21, Resource planning in India, Land utilization & degradation, and Soil profiles of India (Alluvial, Black/Regur, Red & Yellow, Laterite, Arid, Forest soils).

Quick Key Takeaways:
Resource Definition: Everything available in our environment which is technologically accessible, economically feasible, and culturally acceptable to satisfy our needs.
Sustainable Development & Agenda 21: Development that meets the needs of the present without compromising the ability of future generations to meet their own needs. Adopted at Rio de Janeiro Earth Summit (1992).
Resource Planning in India: 3 Stages: (1) Identification and inventory through surveying and mapping, (2) Evolving a planning structure with appropriate technology and skill, (3) Matching resource development plans with overall national development plans.
Major Soil Types of India:
- Alluvial Soil: Most fertile; deposited by Indus, Ganga, Brahmaputra; classified into Khadar (new, fine, fertile) and Bhangar (old, calcareous kankar).
- Black Soil (Regur): Formed from Deccan basalt lava; clayey, retains moisture; ideal for cotton cultivation.
- Laterite Soil: Formed under high temperature and heavy leaching; acidic, deficient in humus; ideal for tea, coffee, cashew nuts after manuring.
- Arid Soil: Sandy, saline, lacks humus; cultivable with proper irrigation (Indira Gandhi Canal).
Soil Conservation Measures: Contour ploughing, Terrace farming, Strip cropping, and planting Shelterbelts of trees.
Interactive Soil & Mineral MapsIdentify major soil types and land use patterns on Indian map
Open Tool
Jump to Concept:1. 1. Resource Classification, Sustainable Development & Planning Architecture2. 2. Land Degradation & Soil Profiles of India Comparative Matrix3. 3. High-Yield Solved Board Examination Questions (3-Mark & 5-Mark)4. 4. CBSE Source-Based & Map Competency Drill: Rio Earth Summit (1992) and Agenda 215. 5. CBSE Examiner Marking Scheme, Key Terms & Topper Presentation
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1. Resource Classification, Sustainable Development & Planning Architecture

Historical & Theoretical Base

Comprehensive timeline, constitutional frameworks, resource classifications, and visual model for Resources and Development.

• Comprehensive Classification of Resources
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On the Basis of Origin: Biotic (living: flora, fauna, human beings) and Abiotic (non-living: rocks, metals).
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On the Basis of Exhaustibility: Renewable (replenished by physical/chemical processes: solar, wind, water, forests) and Non-Renewable (geological formation taking millions of years: fossil fuels, minerals).
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On the Basis of Ownership:
- Individual (privately owned: plots, houses, wells).
- Community-owned (accessible to all members: grazing grounds, burial grounds, village ponds, public parks).
- National (all minerals, water resources, forests, and oceanic area up to 12 nautical miles (22.2 km) from the coast).
- International (oceanic resources beyond 200 nautical miles of the Exclusive Economic Zone - EEZ).
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On the Basis of Status of Development: Potential (available but unutilized: solar/wind in Rajasthan/Gujarat), Developed (surveyed and quantified), Stock (materials capable of satisfying needs but lack technology: e.g. Hydrogen from water), Reserves (subset of stock usable with existing technology for future needs: water in dams).
📊 Resources & Soils: Classification & Soil Profiles of IndiaVisual Model
Resources & Soil Classification of India
Major Soil Profiles
•Alluvial: Highly fertile; Khadar (new) vs Bhangar (old)
•Black Soil (Regur): Clayey, moisture-retentive, ideal for cotton
•Red & Yellow / Laterite: Leached acidic soils in high rainfall zones
Resource Planning & Conservation
•3 Steps: Identification/inventory, planning structure, matching plans
•Land Degradation: Overgrazing (GJ/RJ), Over-irrigation (PB/HR)
•Sustainable Development: Rio 1992 Earth Summit & Agenda 21
Core Concept: Judicious resource utilization balancing economic growth with ecological equilibrium

Visual schematic mapping the 4-tier resource ownership/status classifications, and the geographic distribution of India's 6 major soil profiles.

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2. Land Degradation & Soil Profiles of India Comparative Matrix

Comparative Matrices

In-depth institutional comparisons, economic data matrices, and structural policy breakdowns for Resources and Development.

• Soil Profiles & Geographic Distribution Matrix
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1. Alluvial Soil: Extends across Northern plains, coastal deltas of Mahanadi, Godavari, Krishna, Kaveri. Rich in potash, phosphoric acid, and lime. Highly intensively cultivated for wheat, paddy, sugarcane.
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2. Black / Regur Soil: Covers Deccan trap (Maharashtra, Saurashtra, Malwa, MP, Chhattisgarh). Made of extremely fine clayey material; develops deep cracks during hot weather (self-aeration); ideal for cotton and sugarcane.
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3. Red and Yellow Soils: Develops on crystalline igneous rocks in low rainfall areas of eastern and southern Deccan. Red due to diffusion of iron in crystalline/metamorphic rocks; yellow when hydrated.
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4. Laterite Soil: Formed in tropical/subtropical climates with alternate wet and dry seasons (intense leaching). Found in Western Ghats (Karnataka, Kerala), Tamil Nadu, MP, Odisha. Acidic (pH < 6.0); highly suitable for cashew nut and tea with fertilizers.
• Land Degradation Causes & Conservation Strategies
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Causes of Land Degradation:
- Deforestation and overgrazing (Madhya Pradesh, Rajasthan, Gujarat, Maharashtra).
- Over-irrigation causing waterlogging and soil salinity/alkalinity (Punjab, Haryana, Western UP).
- Mining and quarrying leaving deep scars and abandoned open pits (Jharkhand, Chhattisgarh, Odisha).
- Mineral processing (grinding limestone for cement) generating massive atmospheric dust settling on land.
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Conservation Methods: Afforestation, proper grazing management, stabilizing sand dunes by planting shelterbelts (thorny bushes in arid regions), treating industrial effluents before discharge.
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3. High-Yield Solved Board Examination Questions (3-Mark & 5-Mark)

Solved Board Questions

Standard CBSE 3-mark analytical questions and 5-mark multi-paragraph answers with dates and acts.

• 3-Mark Analytical Question: Differentiate between Khadar and Bhangar soils on the basis of age, texture, and fertility.
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1. Age of Formation:
- Khadar: New alluvial soil, deposited renewed annually by floodwaters in floodplains.
- Bhangar: Old alluvial soil, found in higher terraces above the floodplains.
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2. Texture and Composition:
- Khadar: Fine, smooth particles, clayey texture with high silt content.
- Bhangar: Coarser texture containing higher concentrations of calcareous nodules known as Kankar.
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3. Agricultural Fertility:
- Khadar: Highly fertile due to regular replenishment of fresh river silt; ideal for intensive agriculture.
- Bhangar: Comparatively less fertile; requires chemical fertilizers and intensive irrigation for high yields.
• 5-Mark Structured Essay / Board Answer: (a) What is Resource Planning? Why is resource planning essential in a diverse country like India? Explain with three examples.
(b) Describe any three soil conservation methods suitable for hilly and mountainous regions.
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Part (a) Resource Planning & Indian Diversity:
- Definition: Resource planning is the judicious, equitable, and strategic identification, extraction, and allocation of resources across national and regional development priorities.
- Why Essential in India (Regional Disparities):
1. Resource Rich but Infrastructure Deficient: States like Jharkhand, Chhattisgarh, and Madhya Pradesh are rich in mineral and coal deposits, but lack modern industrial and transport infrastructure.
2. Water Surplus but Infrastructure Deficient: Arunachal Pradesh has abundant water resources, but lacks infrastructural development and connectivity.
3. Culturally Rich but Resource Deficient: The cold desert of Ladakh has a rich cultural heritage, but suffers from acute isolation and deficiencies in water, energy, and vital minerals.
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Part (b) Soil Conservation in Hilly Regions:
1. Contour Ploughing: Ploughing along the contour lines of a hill slope decelerates the flow of surface water down the slope, preventing gully formation.
2. Terrace Farming: Cutting steps or flat terraces along mountain slopes to catch and retain water, dramatically reducing soil runoff (practiced extensively in Western and Central Himalayas).
3. Strip Cropping & Shelterbelts: Dividing large slopes into strips with grass strips between crops to break the velocity of wind and water.
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4. CBSE Source-Based & Map Competency Drill: Rio Earth Summit (1992) and Agenda 21

Source-Based & Map Drill

Primary historical source text analysis, case scenarios, and CBSE map marking coordinates.

• Source / Case Study Context: Rio Earth Summit (1992) and Agenda 21
In June 1992, more than 100 heads of states met in Rio de Janeiro, Brazil, for the first International Earth Summit to address urgent global environmental and socio-economic challenges.
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Q1: What major declaration was signed at the 1992 Rio Earth Summit? →\rightarrow The Declaration on Global Climatic Change and Biological Diversity, adopting Agenda 21 for achieving Sustainable Development in the 21st century.
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Q2: What is the main objective of Agenda 21? →\rightarrow To combat environmental damage, poverty, and disease through global cooperation on common interests, mutual needs, and shared responsibilities.
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Q3: What is the significance of Local Agenda 21? →\rightarrow A key mandate that every local government should draw up its own local Agenda 21 to address grassroots ecological and social problems.
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5. CBSE Examiner Marking Scheme, Key Terms & Topper Presentation

Important Solved Board Questions

Examiner point allocation rules, essential historiographical/geographic terminology, and common error avoidance.

• Step-by-Step Marking Rubric & Key Terminology
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1 Mark: Exact definition of resource with 3 criteria (technologically, economically, culturally).
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2 Marks: 3 stages of resource planning in India with state examples.
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1 Mark: Tabular distinction between Khadar and Bhangar.
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1 Mark: Identification and distribution of 6 major soil types on Indian map.
• Common Error Deduction Traps
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Trap 1: Confusing Territorial Waters (up to 12 nautical miles) with Exclusive Economic Zone (up to 200 nautical miles).
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Trap 2: Stating that Black soil is sandy (Black soil is extremely clayey with moisture-retentive properties).
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Trap 3: Forgetting to mention Kankar nodules when distinguishing Bhangar from Khadar.
Authentic Board Question (3 Marks)Topic: Resources and Development Spatial Patterns & Resource Management
Describe the spatial distribution, ecological significance, and sustainable management practices associated with "Resources and Development".

Official CBSE Step-by-Step Marking Breakdown:

Point 1: Geographical Characteristics & Classification: Define physical characteristics, climatic requirements, soil formations, or resource classification.
1 Mark
Point 2: Spatial Distribution & Depletion Pressures: Identify leading producing states/regions and anthropogenic factors leading to environmental degradation.
1 Mark
Point 3: Sustainable Conservation Strategies: Detail specific technological, legislative, and community-led conservation measures prescribed in NCERT.
1 Mark
Model Student Answer (Target: Full 3/3 Marks):
For a high-scoring 3-mark response on "Resources and Development":

1. Resource Classification: State the geographical characteristics, climatic parameters, and formation processes.
2. Distribution & Challenges: Name key geographical belts/states and explain the primary environmental or economic pressures faced.
3. Sustainable Solutions: Outline actionable conservation techniques (e.g., rainwater harvesting, afforestation, crop rotation, renewable transition).
Examiner Mark Deduction Traps:
•Mention specific states, river basins, or mineral belts rather than generic regions.
•Highlight both government initiatives and community participation for conservation.

High-Frequency Conceptual Doubts & FAQs

Curated answers to the most common questions asked by Class 10 students.
Sustainable Development means meeting the developmental needs of the present generation without compromising the ability of future generations to meet their own needs, while avoiding environmental degradation. Agenda 21 (adopted at the 1992 Rio Earth Summit) is a global action plan for combating environmental damage, poverty, and disease through mutual global cooperation.

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