NCERT Solutions for Class 10 Geography Chapter 5 Minerals and Energy Resources
NCERT Solutions for Class 10 Geography Chapter 5 covers Mode of Occurrence of Minerals, Ferrous and Non-Ferrous Minerals, Non-Metallic Minerals, Conventional vs Non-Conventional Energy Resources, and Conservation Strategies.
Overview of Topics & Subtopics (Click to Jump)
1. Mode of Occurrence & Ferrous Minerals
Short Note:
• Occurrence of Minerals: Found in igneous/metamorphic rocks (veins and lodes), sedimentary rocks (beds or layers), alluvial deposits (placer deposits), and ocean waters.
• Iron Ore: Magnetite (highest iron content, up to 70%) and Hematite (most important industrial iron ore, 50-60%). Major belts: Odisha-Jharkhand, Durg-Bastar-Chandrapur, Ballari-Chitradurga-Chikkamagaluru-Tumakuru, and Maharashtra-Goa belt.
• Manganese: Mainly used in manufacturing steel and ferro-manganese alloy.
2. Non-Ferrous & Non-Metallic Minerals
Short Note:
• Copper: Malleable, ductile, and good conductor of electricity. Major reserves in Balaghat mines (MP), Khetri mines (Rajasthan), and Singhbhum district (Jharkhand).
• Bauxite: Ore from which Aluminium is extracted. Lightweight, highly conductive. Major deposits in Amarkantak plateau, Maikal hills, and Odisha (Panchpatmali).
• Mica: Non-metallic mineral indispensable for electric and electronic industries due to high dielectric strength and low power loss factor. Found in Chota Nagpur plateau (Koderma-Gaya-Hazaribagh belt).
3. Conventional Sources of Energy
Short Note:
• Coal: Most abundantly available fossil fuel. Types: Anthracite (highest quality), Bituminous (commercial use), Lignite (low grade, brown coal), and Peat. Found in Gondwana (Damodar valley - Raniganj, Jharia) and Tertiary deposits.
• Petroleum: Major energy source and synthetic raw material hub. Mumbai High, Ankleshwar (Gujarat), and Digboi (Assam) are major oil fields.
• Natural Gas: Clean energy resource; HVJ pipeline (Hazira-Vijaipur-Jagdishpur) connects major gas fields to industrial markets.
4. Non-Conventional Sources of Energy & Conservation
Short Note:
• Nuclear/Atomic Energy: Obtained by altering the structure of atoms using Uranium and Thorium (Jharkhand, Aravalli ranges, Monazite sands of Kerala).
• Renewable Options: Solar energy (Photovoltaic technology), Wind power (Nagercoil and Jaisalmer), Biogas (Gobar gas plants), Tidal energy (Gulf of Khambhat), and Geothermal energy (Parvati valley in Manikaran, Puga valley in Ladakh).
• Conservation: Using public transport, switching off electricity when not in use, using power-saving devices, and adopting renewable resources.
Intext & Conceptual Questions
2. They are deposited by water flow and generally contain minerals that are not corroded by water.
3. Examples include Gold, Silver, Tin, and Platinum.
2. Hematite: The most important industrial iron ore in terms of quantity used, containing 50% to 60% iron content.
Textbook Chapter End Exercise Questions
1. Conventional Sources: Have been in traditional use for a long time (e.g., Coal, Petroleum, Natural Gas). They are non-renewable and cause environmental pollution.
2. Non-Conventional Sources: Recently developed eco-friendly energy alternatives (e.g., Solar, Wind, Tidal, Biogas). They are renewable, sustainable, and cause minimal pollution.
Necessity: Minerals are finite, non-renewable geological resources. Their rate of formation is extremely slow compared to current rapid consumption rates.
Ways to Conserve:
1. Improved mining and processing technologies to minimize wastage during extraction.
2. Recycling of metals using scrap metals and searching for sustainable substitutes.
In India, coal occurs in rock series of two main geological ages:
1. Gondwana Coal Deposits: Over 200 million years old, metallurgical grade coal located mainly in Damodar Valley (Jharia, Raniganj, Bokaro), Godavari, Mahanadi, and Son valleys.
2. Tertiary Coal Deposits: Around 55 million years old, found mostly in north-eastern states such as Meghalaya, Assam, Arunachal Pradesh, and Nagaland.
Read More & Chapter Resources
These short notes are designed for quick revision. Read the main points once, then use the related material below to practise the same chapter. Revising a concept and checking it with questions can make your preparation more focused.