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.
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.
🔑 Revision block
The assessment. India's Rare Earth Permanent Magnet (REPM) demand — about 8,220 tonnes a year by 2030, assessed 21 July 2026 by IREL (India) Limited, the Defence Metallurgical Research Laboratory (DMRL) and BARC. Biggest driver electric vehicles, then wind turbines, industrial motors, electronics and solar pumps.
The chemistry. Rare Earth Elements = 17 metals — the 15 lanthanides plus scandium and yttrium. Not truly rare in the crust, but rarely concentrated in minable deposits and hard to separate because their chemistry is near-identical. Names to know: neodymium, praseodymium, dysprosium, terbium, cerium, lanthanum.
The physics. A permanent magnet holds its field with no external power. Neodymium-iron-boron (NdFeB) is the strongest · dysprosium and terbium are added for heat tolerance · magnet plus coil → electromagnetic induction → motors (electricity → motion) and generators (motion → electricity).
Where the leverage sits. China: roughly 60% of mining · 90% of refining and separation · 95% of magnet production, backed by export controls. The same magnets serve EV motors and wind turbines and missiles, radars, fighter jets, submarines and precision-guided weapons.
India's answer. Monazite in the beach sands of Kerala, Odisha, Tamil Nadu and Andhra Pradesh — monazite also carries thorium, tying into the nuclear programme → mined and processed by IREL, a PSU under the Department of Atomic Energy → the Geological Survey of India (GSI) explores · a National Critical Mineral Mission and critical-mineral block auctions · KABIL (Khanij Bidesh India Ltd) buys assets abroad.
The trap. Rare earths are neither radioactive gases nor genuinely scarce; the miner is IREL, not ISRO.
For the SSB. Magnets are the choke point of Aatmanirbhar Bharat in high technology — no REPMs, no EV or wind-energy targets, and no strategic autonomy in defence electronics.
🎯 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.