On 21 July 2026, an assessment by IREL (India) Limited, the Defence Metallurgical Research Laboratory (DMRL) and BARC estimated India's demand for Rare Earth Permanent Magnets (REPMs) at about 8,220 tonnes a year by 2030 — driven by electric vehicles, wind turbines, motors and electronics. For an NDA aspirant, this is a superb science-and-strategy topic: it explains what rare earths are, how permanent magnets power modern technology, why they are strategically critical, and India's efforts to secure them — blending chemistry, physics and national security.
The news in one frame
The essentials:
- What: an assessment of India's Rare Earth Permanent Magnet (REPM) demand — ~8,220 tonnes/year by 2030.
- Who: IREL (India) Ltd, DMRL (a DRDO lab) and BARC.
- Drivers: EVs (largest demand), wind turbines, industrial motors, smartphones, solar pumps.
- Why it matters: rare earths are critical, strategic minerals — and their supply is heavily concentrated in one country.
What are rare earth elements?
Start with the chemistry. Rare Earth Elements (REEs) are a group of 17 metallic elements — the 15 lanthanides (on the periodic table) plus scandium and yttrium. Despite the name, they are not especially rare in the Earth's crust — but they are rarely found in concentrated, economically minable deposits, and are very hard and costly to separate from one another (they have very similar chemical properties). Well-known REEs include neodymium, praseodymium, dysprosium, terbium, cerium and lanthanum. Their special magnetic, luminescent and catalytic properties make them indispensable to high-tech industries. This chemistry-and-materials topic is exactly what the NDA general-knowledge and chemistry notes build.
Permanent magnets — the physics
The heart of the news is permanent magnets. A permanent magnet keeps its magnetism without any external power. The strongest permanent magnets known are made from rare earths — chiefly neodymium-iron-boron (NdFeB) magnets:
- Neodymium (Nd) is the key rare earth; NdFeB magnets are far stronger (higher magnetic field per unit weight) than ordinary iron or ferrite magnets.
- Small additions of dysprosium and terbium let them work at high temperatures (important in motors).
- Because they are compact yet powerful, they enable small, efficient electric motors and generators — the basis of EVs, wind turbines, drones, robots and hard drives.
The physics link: a magnet has a north and south pole, produces a magnetic field, and a moving magnet/coil generates electricity (electromagnetic induction) — which is why magnets are central to both motors (electricity → motion) and generators (motion → electricity). This is exactly the NDA physics material on magnetism and energy.
Why rare earths are strategic
The examinable "strategy" angle:
- Green tech depends on them: EV motors and wind turbines need REPMs — so the energy transition runs on rare earths.
- Defence needs them: rare earths go into missiles, radars, fighter jets, submarines and precision-guided weapons — making them a national-security material.
- Supply is concentrated: China dominates the rare-earth supply chain — roughly 60% of mining, about 90% of refining/separation, and around 95% of magnet production — giving it enormous leverage (it has used export controls as a tool).
- Hence the global (and Indian) push for self-reliance in mining, refining and magnet-making.
The revision hook: rare earths = 17 elements (15 lanthanides + Sc + Y), not truly rare but hard to separate; neodymium-iron-boron (NdFeB) = the strongest permanent magnets, vital for EV motors, wind turbines and defence; China dominates ~90% of refining and ~95% of magnets; India (IREL/DMRL/BARC) is building capacity; demand ~8,220 t/yr by 2030. These themes recur in the NDA daily current affairs.
India's rare-earth position
Place India's effort clearly:
- India has significant rare-earth reserves, mostly in monazite — a mineral found in the beach/coastal sands of Kerala, Odisha, Tamil Nadu and Andhra Pradesh (monazite also contains thorium, linking to India's nuclear programme).
- IREL (India) Limited, a PSU under the Department of Atomic Energy, mines and processes these sands.
- The Geological Survey of India (GSI) explores and augments reserves; a National Critical Mineral Mission and critical-mineral block auctions aim to secure supply.
- KABIL (Khanij Bidesh India Ltd) seeks critical-mineral assets abroad.
Why it matters
For the SSB and the bigger picture:
- Self-reliance: securing rare earths and magnet-making is core to Aatmanirbhar Bharat in high technology.
- Clean energy & mobility: without REPMs, India's EV and wind-energy goals stall — so this is an energy-security issue.
- Strategic autonomy: reducing dependence on a single supplier protects both the economy and defence.
Exam relevance in one paragraph
For NDA General Science, retain: Rare Earth Elements are 17 metals (15 lanthanides plus scandium and yttrium) that are not truly rare but hard to separate; the strongest permanent magnets are neodymium-iron-boron (NdFeB), essential for EV motors, wind turbines, electronics and defence systems; magnets underpin motors (electricity→motion) and generators (motion→electricity) via electromagnetic induction; China dominates the supply chain (~90% refining, ~95% magnets); India's reserves lie mainly in monazite beach sands (also containing thorium), mined by IREL (under the Department of Atomic Energy), with GSI exploration and KABIL sourcing minerals abroad; India's REPM demand is ~8,220 tonnes/year by 2030. For the SSB, it exemplifies strategic self-reliance in critical technology.
🎯 Practice MCQs
Q1. How many elements are classed as rare earth elements? (a) 17 (b) 10 (c) 5 (d) 30 → (a) — 17 (15 lanthanides + scandium + yttrium).
Q2. Rare earths are called "rare" mainly because they are: (a) hard to find concentrated and to separate (b) radioactive (c) man-made (d) gases → (a) — rarely concentrated and difficult to separate.
Q3. The strongest permanent magnets are made from: (a) neodymium-iron-boron (NdFeB) (b) copper (c) aluminium (d) plastic → (a) — NdFeB (neodymium magnets).
Q4. The key rare earth used in strong magnets is: (a) neodymium (b) sodium (c) calcium (d) carbon → (a) — neodymium.
Q5. Rare earth magnets are crucial for: (a) EV motors and wind turbines (b) making glass (c) cooking gas (d) paper → (a) — electric vehicle motors and wind turbines.
Q6. Which country dominates rare-earth refining and magnet production? (a) China (b) India (c) the USA (d) Japan → (a) — China (~90% refining, ~95% magnets).
Q7. India's rare earths are mostly found in the mineral: (a) monazite (b) bauxite (c) hematite (d) gypsum → (a) — monazite (in beach sands).
Q8. Monazite is significant to India's nuclear programme because it contains: (a) thorium (b) gold (c) coal (d) silver → (a) — thorium.
Q9. The PSU that mines and processes India's rare-earth sands is: (a) IREL (India) Ltd (b) SAIL (c) ONGC (d) NTPC → (a) — IREL (under the Department of Atomic Energy).
Q10. A permanent magnet: (a) keeps its magnetism without external power (b) needs electricity always (c) is non-magnetic (d) works only when heated → (a) — retains magnetism on its own.
Q11. A magnet moving in a coil generates electricity by: (a) electromagnetic induction (b) combustion (c) evaporation (d) fusion → (a) — electromagnetic induction.
Q12. Which body explores India's mineral reserves? (a) Geological Survey of India (b) SEBI (c) ISRO (d) TRAI → (a) — the GSI.
Q13. KABIL (Khanij Bidesh India Ltd) aims to: (a) secure critical minerals abroad (b) build ports (c) run banks (d) launch satellites → (a) — acquire critical-mineral assets overseas.
Q14. The largest driver of India's 2030 REPM demand is: (a) electric vehicles (b) toys (c) furniture (d) textiles → (a) — EVs.
Q15. Rare earth elements include the 15 ___ plus scandium and yttrium: (a) lanthanides (b) actinides (c) noble gases (d) halogens → (a) — lanthanides.
Q16. A permanent magnet used in an electric motor converts: (a) electrical energy into motion (b) heat into light (c) sound into electricity (d) light into heat → (a) — electrical energy into mechanical motion.
Q17. India's REPM demand assessment was carried out by IREL, BARC and: (a) DMRL (a DRDO lab) (b) ISRO (c) SEBI (d) TRAI → (a) — the Defence Metallurgical Research Laboratory (DMRL).
Q18. Which is NOT a rare earth element? (a) iron (b) neodymium (c) cerium (d) yttrium → (a) — iron (it is a common transition metal).
📋 How this gets asked (PYQ pattern)
Critical minerals are a rising NDA science-and-strategy set. The reliable framings are what REEs are (17, lanthanides + Sc + Y), neodymium magnets and their uses, China's dominance, and India's monazite/IREL. A common trap says rare earths are radioactive gases or credits mining to ISRO. The fresh 2026 hook is India's REPM demand assessment — ideal for "which element / which magnet / which mineral" items. We reference the pattern, not any exact past question.
Preparing for the NDA? Rare earths, magnets and critical minerals are high-yield science topics and strong SSB talking points on strategic self-reliance. Follow our daily NDA current affairs and train with serving-officer faculty in the upcoming Cavalier courses in Delhi.
✍️ Written by Maj Sunil Chopra — Co-founder & defence faculty at The Cavalier. Reviewed by the Cavalier Faculty Desk. The Cavalier, founded by ex-Army officers, has trained NDA/CDS/SSB aspirants since 2001 (Facebook · YouTube).
Source: PIB / IREL, DMRL & BARC assessment, 21 July 2026. Facts cross-verified with independent sources.