CBSE Class 8 Social Science Chapter 10 Mineral and Power Resources — 20 MCQs with Answers

Minerals are naturally occurring substances with a definite chemical composition found in rocks. The NCERT Class 8 Social Science chapter divides minerals into metallic (further split into ferrous and non-ferrous) and non-metallic categories. Ferrous minerals like iron ore and manganese contain iron and are used in heavy industries. Non-ferrous minerals such as copper, bauxite, lead, and zinc do not contain iron and are vital for electrical and light engineering industries. Non-metallic minerals include mica, limestone, and fossil fuels like coal and petroleum. Questions in this section test your ability to classify minerals and identify their uses in real-world applications. Expect straightforward recall as well as application-based MCQs where you must connect a mineral with its industrial utility.

India is rich in mineral resources, but their distribution is uneven. Iron ore is concentrated in three main belts: the Odisha-Jharkhand belt (Mayurbhanj, Keonjhar, Singhbhum), the Durg-Bastar-Chandrapur belt in Chhattisgarh and Maharashtra, and the Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka. Coal, the most abundant fossil fuel, is found in Jharia (Jharkhand), Bokaro (Jharkhand), Raniganj (West Bengal), and Singareni (Telangana). Bauxite deposits are prominent in Odisha, Jharkhand, Maharashtra, Chhattisgarh, and Tamil Nadu. Mica is mined in Jharkhand, Andhra Pradesh, and Rajasthan. Understanding these geographical distributions is critical, as CBSE often includes map-based or region-identification MCQs in periodic tests and board exams.

Conventional energy sources are those that have been in use for a long time and are exhaustible. Coal is the primary source of energy in India, used in thermal power plants, railways, and industries. Petroleum, refined into petrol, diesel, kerosene, and LPG, powers transport and industries. Natural gas is found with petroleum and is used in fertiliser production and power generation. Electricity is generated from both thermal (coal-based) and hydroelectric sources. The NCERT textbook emphasises that coal and petroleum are fossil fuels formed over millions of years and are non-renewable. Questions here test factual recall (e.g., main coalfields) as well as understanding of energy generation processes and the need for conservation due to finite reserves.

Non-conventional energy sources are renewable, eco-friendly, and increasingly important for sustainable development. Solar energy is harnessed using photovoltaic cells and solar panels; India receives abundant sunlight, making it ideal for solar power. Wind energy is captured by windmills and wind farms, especially in Tamil Nadu, Gujarat, and Rajasthan. Tidal energy exploits the movement of ocean tides, while geothermal energy taps heat from the Earth's interior, with potential in Himachal Pradesh and Ladakh. Biogas is produced from organic waste and used in rural areas for cooking and lighting. Nuclear energy, derived from uranium and thorium, is also considered non-conventional and is used in power plants like Tarapur and Kalpakkam. These sources reduce dependence on fossil fuels and lower pollution levels, making them a hot topic in CBSE exams.

Minerals and fossil fuels are exhaustible and take millions of years to form, making conservation imperative. The NCERT textbook emphasises reducing wastage, recycling metals, using energy-efficient appliances, and shifting to renewable energy. For instance, recycling aluminium saves energy and reduces the need for fresh bauxite mining. Switching off lights, using public transport, and adopting solar power at home are simple conservation measures. In industrial contexts, using improved technology to extract more from existing reserves and preventing illegal mining are critical. CBSE exams often ask students to suggest conservation measures or justify the importance of renewable energy. These questions test application of concepts to real-life scenarios and align with the UN Sustainable Development Goals, a theme increasingly reflected in CBSE question papers. Understanding the link between resource depletion and environmental degradation is key to scoring well in descriptive and MCQ formats alike.

MCQs in CBSE Class 8 Social Science carry one mark each and appear in Section A of the annual exam. The 2025 CBSE sample paper allocated 20 marks to MCQs, making them a quick scoring opportunity if approached strategically. First, read the question stem carefully, noting keywords like 'NOT', 'EXCEPT', or 'ferrous'. Eliminate obviously wrong options to narrow your choice. For assertion-reason questions, check both statements independently before deciding the relationship. If you are unsure, make an educated guess rather than leaving the question blank, as there is no negative marking in Class 8. Time management is crucial; aim to finish all MCQs in 10-12 minutes, allowing more time for long-answer questions. After completing the paper, revisit flagged MCQs if time permits. Practice with NCERT-based questions ensures familiarity with terminology and reduces silly errors. Finally, revise diagrams and maps from the textbook, as map-based MCQs on mineral distribution are common. Regular practice using resources like CBSETUTOR.ai, which offers instant feedback on photo-uploaded questions, sharpens accuracy and speed significantly.

Effective revision for Mineral and Power Resources involves a mix of reading, mapping, and practice. Start by creating a two-column table listing metallic and non-metallic minerals with their uses, as per NCERT Chapter 10. Mark the three iron ore belts on a blank map of India and label major coalfields, bauxite deposits, and mica mining regions. This visual memory aids map-based MCQs. Next, prepare flashcards for conventional versus non-conventional energy sources, noting examples and advantages of each. Solve previous years' CBSE question papers to identify recurring themes, such as questions on Mumbai High, Kudremukh, or biogas. Time yourself while attempting 20 MCQs to simulate exam pressure. Review incorrect answers immediately, noting the NCERT page reference for each concept. Use mnemonic devices; for instance, remember the three iron ore belts as 'OJB-DCB-BBC' (Odisha-Jharkhand Belt, Durg-Bastar-Chandrapur Belt, Bellary-Chitradurga Belt). Finally, discuss tricky questions with classmates or use the 24×7 doubt-solving feature on CBSETUTOR.ai, where you can upload a photo of any MCQ and receive a step-by-step explanation within seconds. This blend of active recall, spaced repetition, and instant feedback ensures you retain concepts long-term and perform confidently in both school assessments and board exams.

Students often confuse ferrous and non-ferrous minerals, mistakenly classifying copper or bauxite as ferrous because they are metallic. Remember, ferrous means containing iron, so only iron ore and manganese qualify. Another pitfall is mixing up coalfield names; Jharia is in Jharkhand, not Chhattisgarh, and Raniganj is in West Bengal, not Jharkhand. Map-based questions trip up candidates who skip NCERT maps, so always revise the distribution maps on pages 63, 65, and 67. In assertion-reason MCQs, students sometimes mark option (B) when the reason is a correct general statement but does not explain the assertion, a subtle distinction that requires careful reading. Time pressure leads to misreading keywords like 'NOT' or 'EXCEPT', resulting in careless errors. Finally, many students ignore non-conventional energy in favour of memorising mineral names, but CBSE increasingly tests renewable energy to align with sustainability themes. Avoid these mistakes by reading questions twice, underlining keywords, and practising under timed conditions. Platforms like CBSETUTOR.ai highlight common error patterns in your practice sessions, helping you course-correct before the actual exam.

CBSETUTOR.ai offers a 24×7 AI tutor that acts as a personal guide for Class 8 Social Science and all other subjects. You can upload a photo of any MCQ, diagram, or map from Chapter 10, and the AI provides a step-by-step explanation within seconds, clarifying why the correct option is right and why distractors are wrong. This instant feedback loop accelerates learning far more than waiting for a teacher the next day. The platform covers every NCERT chapter, so whether you are stuck on Mineral and Power Resources or struggling with a history timeline, help is always a tap away. Priced at a flat ₹999 per month for all subjects across Classes 6-12, it is more affordable than a single subject's private tuition. You also get a 3-day free trial to explore features like topic-wise tests, video explanations, and performance analytics. For Class 8 students juggling multiple subjects, CBSETUTOR.ai's one-stop solution saves time, reduces stress, and builds exam confidence. Parents appreciate the transparency of progress reports and the convenience of on-demand doubt solving, making it a smart investment for consistent academic growth.