Agni-1 (Sanskrit: เค เคเฅเคจเคฟ โ "Fire") is a nuclear-capable, single-stage, solid-propellant, surface-to-surface ballistic missile developed by India's Defence Research and Development Organisation (DRDO). It is the first operationally inducted missile of the Agni series, inducted into the Strategic Forces Command (SFC) in 2007. It is classified as a Short-Range Ballistic Missile (SRBM) / Medium-Range Ballistic Missile (MRBM) โ UPSC officially uses SRBM, though some sources call it MRBM.
"Agni" in Sanskrit means Fire. Manufacturer: Bharat Dynamics Limited (BDL). Unit cost: approx. โน25โ35 crore.
| Parameter | Ballistic Missile | Cruise Missile |
|---|---|---|
| Propulsion | Rocket-powered only in initial boost phase; rest is unpowered ballistic trajectory | Jet-propelled throughout entire flight (air-breathing engine) |
| Flight path | Parabolic / sub-orbital arc (follows gravity after boost) | Low-altitude, terrain-hugging, guided throughout |
| Speed | Hypersonic in terminal phase (Mach 4โ24 depending on type) | Subsonic to supersonic (BrahMos = Mach 2.8) |
| Guidance | Inertial (RLG-INS) + GPS in terminal phase; autonomous after launch | Guided continuously via GPS/terrain mapping/active radar |
| Examples (India) | Agni series, Prithvi series, K-15, K-4 | BrahMos, Nirbhay, Shaurya (quasi-ballistic) |
| Warhead | Can carry nuclear / conventional | Typically conventional (BrahMos is non-nuclear) |
UPSC asked: "Ballistic missiles are jet-propelled at subsonic speeds throughout their flights." This is FALSE. Ballistic missiles are rocket-propelled, powered only in the boost phase. BrahMos is a cruise missile โ NOT a ballistic missile. Agni-V is a ballistic missile โ NOT a cruise missile. Answer was (d) Neither 1 nor 2.
| Type | Abbreviation | Range | India Example |
|---|---|---|---|
| Short-Range Ballistic Missile | SRBM | < 1,000 km | Prithvi-II (350 km), Agni-1 (700 km) |
| Medium-Range Ballistic Missile | MRBM | 1,000โ3,000 km | Agni-II (2,000 km), Agni-P (1,000โ2,000 km) |
| Intermediate-Range Ballistic Missile | IRBM | 3,000โ5,500 km | Agni-III (3,500 km), Agni-IV (4,000 km), Agni-V (5,000+ km) |
| Intercontinental Ballistic Missile | ICBM | > 5,500 km | Agni-V (operationally, some classify as ICBM), Agni-VI (under development) |
UPSC officially classifies Agni-1 as a "Short-Range Ballistic Missile (SRBM)" (as per the May 22, 2026 MoD PIB release). But many sources call it MRBM. Always go with the PIB / MoD official classification in exams.
A ballistic missile is powered only in the boost phase (first few minutes). After engine burnout, it follows a ballistic arc determined entirely by gravity โ like a cannon ball. It re-enters the atmosphere in the terminal phase at hypersonic speed. Agni-1's terminal speed: approximately 2.5 km/s (9,000 km/h).
The IGMDP was launched in 1983 under the Ministry of Defence, spearheaded by Dr. APJ Abdul Kalam at DRDO. Its objective: achieve self-reliance in guided missile technology. Five missile systems were developed under IGMDP, remembered by the mnemonic PATNA:
The Agni technology demonstrator was developed within IGMDP. After successful tests demonstrated its strategic importance, the Agni programme was separated from IGMDP and given independent strategic programme status. IGMDP was formally concluded in 2008.
IGMDP's Agni used two existing boosters: a solid-fuel first stage from ISRO's SLV-3 space launch vehicle + a modified Prithvi-I body as upper stage. The HTPB composite propellant motor from SLV-3 produced ~48,000 kg of thrust.
Agni-1 is notable as India's first operationally inducted strategic ballistic missile. The Prithvi-II (350 km range) was inducted earlier (2003) but is a tactical/short-range system. Agni-1 was the first true nuclear-delivery ballistic missile in SFC service.
| Parameter | Specification | UPSC Significance |
|---|---|---|
| Full Name | Agni-I (Agni-1) โ "Fire" | Sanskrit meaning: Fire. First of Agni series. |
| Type | Short-Range Ballistic Missile (SRBM) / MRBM | Official MoD PIB (May 2026): "Short-Range Ballistic Missile" |
| Propellant | Single-stage, composite solid fuel (HTPB-based) | Solid fuel = no pre-launch fuelling = rapid deployment advantage |
| Length | 15 metres | Shorter than Agni-2 (21 m) โ easier to deploy from road/rail |
| Diameter | 1.0 metre | Same as Agni-2 diameter |
| Launch Weight | 12,000 kg (12 tonnes) | Lighter than Agni-2 (16 t), Agni-3 (50 t), Agni-5 (50 t) |
| Operational Range | 700โ1,200 km (standard payload); up to 1,200 km with reduced payload | 1,200 km covers all of Pakistan from Indian territory |
| Payload Capacity | 1,000โ2,500 kg | Can carry conventional or nuclear warhead |
| Warhead Types | Conventional HE-unitary ยท Penetration ยท Cluster ยท Incendiary ยท Thermobaric ยท Strategic nuclear | Nuclear-capable โ key UPSC point |
| Flight Ceiling (Apogee) | ~370 km | Sub-orbital โ stays within atmosphere unlike ICBM |
| Terminal Speed | ~2.5 km/s (9,000 km/h; ~Mach 7+) | Hypersonic terminal phase โ very hard to intercept |
| Guidance System | Mid-course: RLG-INS + multi-GNSS; Terminal: Radar scene matching | Ring Laser Gyro Inertial Navigation System โ indigenously developed |
| Accuracy (CEP) | ~25 metres | Very high precision โ Circular Error Probable of 25 m |
| Launch Platform | 8ร8 Tatra TEL (road-mobile) ยท Rail mobile launcher | TEL = Transporter Erector Launcher โ gives strategic mobility |
| Developer | DRDO (Advanced Systems Laboratory, Hyderabad) | 100% indigenous development |
| Manufacturer | Bharat Dynamics Limited (BDL) | Public sector defence company under MoD |
| User | Strategic Forces Command (SFC) โ Indian Army | SFC manages all nuclear delivery systems |
| Induction Year | 2007 | First Agni variant to be operationally inducted |
| Estimated Units Built | ~70 (as of 2017 estimate) | Production is classified; 70 is an open-source estimate |
| Unit Cost | โน25โ35 crore (โ USD 3โ4 million) | Affordable deterrent compared to aircraft-delivered weapons |
UPSC loves range comparison questions. Memorise the range ladder: Prithvi-II (350 km) โ Agni-1 (700โ1,200 km) โ Agni-P (1,000โ2,000 km) โ Agni-2 (2,000 km) โ Agni-3 (3,500 km) โ Agni-4 (4,000 km) โ Agni-5 (5,000+ km) โ Agni-6 (10,000+ km, under development).
CEP (Circular Error Probable) = the radius of a circle within which 50% of warheads land. Agni-1's CEP of 25 metres is extremely accurate for a ballistic missile. Agni-P achieves even better: 10 m CEP. For nuclear-use, accuracy matters less; for conventional use, high accuracy is critical.
| Feature | Description | Strategic Significance |
|---|---|---|
| Single-Stage Design | Uses only one rocket motor stage (unlike Agni-2, 3, 4, 5 which are multi-stage) | Simpler, more reliable; fewer separation events that can fail |
| Solid Propellant (HTPB) | Hydroxyl-terminated polybutadiene composite propellant โ stores and launches without fuelling delay | Launch-ready at all times; no liquid fuelling time unlike Prithvi liquid variants |
| Road Mobile (TEL) | Launches from 8ร8 Tatra truck-mounted Transporter Erector Launcher (Mark III TEL) | Can be moved anywhere on India's road network; survives first strike by hiding |
| Rail Mobile Capability | Can also be launched from a specially designed rail mobile launcher | India = one of few nations with rail-mobile ballistic missiles (with Russia, China, USA) |
| Nuclear-Capable Warhead | Designed to carry nuclear warhead of 1,000 kg+; also carries conventional warheads | Core of India's land-based nuclear triad leg |
| Dual Use | Can carry conventional or nuclear payload depending on mission requirement | Provides flexible response options below nuclear threshold |
| RLG-INS Guidance | Ring Laser Gyro Inertial Navigation System โ self-contained, jam-proof mid-course guidance | No dependence on external GPS/signals during flight โ cannot be jammed |
| Radar Scene Matching (Terminal) | Terminal phase uses radar scene matching for high accuracy targeting | CEP of 25 metres โ allows precision strikes even against hardened targets |
| Re-entry Vehicle Technology | Validated through Agni demonstrator (1989, 1992, 1994) โ withstands 3,000ยฐC+ re-entry heat | Critical technology mastered indigenously โ blocked by export controls until IGMDP |
| Quick Reaction Time | Solid fuel + road mobile = can be readied and launched rapidly | Supports No First Use doctrine โ ensures second-strike capability even after enemy attack |
The Agni's first-stage solid motor was adapted from ISRO's SLV-3 space launch vehicle โ a rare example of space technology directly feeding into strategic missile development. Dr. APJ Abdul Kalam led both the SLV-3 programme and IGMDP.
Students confuse "single-stage" with "short-range only." Single-stage = one rocket motor. Agni-2 (2,000 km) is two-stage. More stages = more range. But single-stage does not mean less capable โ Agni-1's 700โ1,200 km covers all priority targets vis-ร -vis Pakistan.
| Variant | Classification | Range | Stages | Weight | Length | Payload | Status | Key Fact |
|---|---|---|---|---|---|---|---|---|
| Agni-1 | SRBM/MRBM | 700โ1,200 km | 1 | 12,000 kg | 15 m | 1,000 kg | โ Operational (2007) | First inducted; Chandipur test 22 May 2026 |
| Agni-2 | MRBM | 2,000โ3,000 km | 2 | 16,000 kg | 21 m | 1,000 kg | โ Operational (2010) | Two-stage; covers all of Pakistan + W. China |
| Agni-3 | IRBM | 3,000โ5,000 km | 2 | 50,000 kg | 17 m | 1,500 kg | โ Operational (2011) | Tested Feb 6, 2026 from Chandipur |
| Agni-4 | IRBM | 3,500โ4,000 km | 2 | 17,000 kg | 20 m | 800 kg | โ Operational (user-tested 2024) | Lighter than Agni-3; CEP <100 m |
| Agni-5 | IRBM/ICBM | 5,000โ8,000 km | 3 | 50,000โ56,000 kg | 17.5 m | 1,100โ3,000 kg | โ Operational (MIRV tested 2024, 2026) | Mission Divyastra (Mar 2024); MIRV ร 3โ6 warheads; Canisterised |
| Agni-P (Prime) | MRBM | 1,000โ2,000 km | 2 | 11,000 kg | 10.5 m | 1,500โ3,000 kg | ๐ถ Pre-induction trials (Rail mobile 2025) | Lightest Agni; MIRV-capable; Rail launched Sep 2025 |
| Agni-6 | ICBM | 10,000โ12,000 km | 4 | 55,000โ70,000 kg | 20โ40 m | 3,000 kg (10โ11 MIRVs) | ๐ด Under development | DRDO chief confirmed readiness pending govt approval (2026) |
1-2-3-4-5 Rule: Agni-1 = 700 km ยท Agni-2 = 2,000 km ยท Agni-3 = 3,500 km ยท Agni-4 = 4,000 km ยท Agni-5 = 5,000 km ยท Agni-P = 1,000โ2,000 km (between 1 & 2) ยท Agni-6 = 10,000+ km
India's first successful MIRV (Multiple Independently Targetable Re-entry Vehicle) test of Agni-5. India became the 6th country globally with MIRV capability, after USA, Russia, UK, France, China. PM Modi announced it. Second MIRV test: 8 May 2026.
DRDO + SFC conducted first-ever launch of Agni-Prime from a rail-based mobile launcher. India joined Russia, USA, China as nations with rail-mobile ballistic missiles โ a first for India. Rail launcher can move seamlessly on India's rail network without preconditions.
Agni-5 is canisterised โ sealed inside a canister on a road-mobile launcher. This means: no preparation time before launch, can be stored indefinitely, enhances survivability. Earlier Agnis (1โ4) were not canisterised.
| Body | Full Name | Est. | Role in Agni/Nuclear Programme | Head / Key Official |
|---|---|---|---|---|
| DRDO | Defence Research and Development Organisation | 1958 | Designs and develops all Agni missiles. Advanced Systems Laboratory (ASL), Hyderabad is the primary lab. Research Centre Imarat (RCI) develops guidance systems. | Secretary, Dept. of Defence R&D (Currently DRDO Chairman) |
| BDL | Bharat Dynamics Limited | 1970 | Manufactures all Agni missiles for operational deployment. Also manufactures Akash, Nag, BrahMos components. | CMD, BDL โ public sector undertaking under MoD |
| SFC | Strategic Forces Command | 4 Jan 2003 | Manages, operates, and administers India's nuclear weapons stockpile (tactical + strategic). Conducts all user training launches. Currently headed by Lt. Gen. Dinesh Singh Rana (from Oct 2025). | Commander-in-Chief, SFC โ reports to Chief of Defence Staff (CDS) |
| NCA | Nuclear Command Authority | 2003 | Apex body for nuclear policy, doctrine, and launch decisions. Divided into Political Council (chaired by PM) and Executive Council (chaired by NSA). Only body authorised to order a nuclear strike. | Political Council: Prime Minister ยท Executive Council: National Security Advisor |
| CCS | Cabinet Committee on Security | โ | India's highest security decision-making body. Reviews nuclear doctrine operationalisation. Established SFC on 4 Jan 2003. Any nuclear strike decision ultimately flows through NCA โ CCS. | PM (Chair), Home Minister, External Affairs Minister, Defence Minister, Finance Minister |
| ITR | Integrated Test Range | 1982 | India's primary missile testing facility operated by DRDO. Two launch complexes: LC-III at Chandipur (where Agni-1 was just tested); LC-IV at Abdul Kalam Island (formerly Wheeler Island). Located in Balasore district, Odisha. | Director, ITR โ DRDO |
| ASL | Advanced Systems Laboratory, Hyderabad | โ | Primary DRDO lab that develops the Agni missile systems. Also develops the K-series submarine-launched ballistic missiles. | Part of DRDO |
| RCI | Research Centre Imarat, Hyderabad | โ | Develops guidance and navigation systems for all Indian missiles including RLG-INS used in Agni-1. | Part of DRDO |
Formerly called Wheeler Island. Renamed Dr. APJ Abdul Kalam Island in 2015 in honour of the former President and "Missile Man of India" who led IGMDP. It is Launch Complex-IV of ITR, principal launch site for strategic and long-range missiles. Located off Odisha coast near Chandipur.
ITR has two complexes: LC-III = Chandipur (shorter range missiles, Agni-1 trained here) ยท LC-IV = Abdul Kalam Island (longer range: Agni-3, 4, 5). Agni-1 (May 22, 2026) was from Chandipur ITR โ a Prelims-relevant location fact.
| Concept | What It Is | Link to Agni-1 |
|---|---|---|
| IGMDP | Integrated Guided Missile Development Programme (1983โ2008) | Origin of Agni programme; gave India self-reliance in missile technology blocked by international export controls post-1987 (MTCR) |
| No First Use (NFU) | India's nuclear doctrine: will not use nuclear weapons first; will respond with massive retaliation if attacked | Agni-1's road+rail mobility ensures survivability of nuclear assets, supporting second-strike capability under NFU |
| Credible Minimum Deterrence | India maintains enough nuclear weapons to inflict unacceptable retaliation โ no more, no less | Agni-1 is the short-range leg of credible minimum deterrence; adequate to deter Pakistan without excessive nuclear build-up |
| Nuclear Triad | Three-legged nuclear capability: Land (ballistic missiles) + Sea (SSBN submarines) + Air (nuclear aircraft) | Agni-1 = Land leg. Sea leg = INS Arihant (SSBN) with K-15/K-4. Air leg = Rafale/Mirage-2000 nuclear strike aircraft. |
| MIRV | Multiple Independently Targetable Re-entry Vehicle โ one missile carries multiple warheads targeting different locations | Agni-1 is NOT MIRV-capable (single warhead). Agni-5 became India's first MIRV missile (Mission Divyastra, 2024). Agni-P also being developed with MIRV. |
| MTCR | Missile Technology Control Regime โ international export control preventing transfer of missile tech above 300 km range / 500 kg payload | MTCR restrictions forced India to develop Agni indigenously. India joined MTCR in 2016 (35th member) โ a foreign policy milestone. |
| NPT | Nuclear Non-Proliferation Treaty | India is NOT an NPT signatory (never joined). India is a de facto nuclear state, recognised through the Indo-US Nuclear Deal (2008) and NSG waiver. |
| NSG | Nuclear Suppliers Group | India received a waiver from NSG in 2008 (Indo-US deal) to import civilian nuclear technology despite not joining NPT. India seeks full NSG membership (China opposes). |
| Chandipur / ITR | Integrated Test Range at Chandipur, Balasore, Odisha | Launch site of Agni-1 (May 22, 2026), Agni-3 (Feb 2026), Agni-4 (Sep 2024) etc. Established 1982. Operated by DRDO. |
| SLV-3 | Satellite Launch Vehicle-3 โ ISRO's first operational launch vehicle (1980) | Agni's solid-fuel first stage was adapted from SLV-3 booster. Dr. Kalam led both projects โ rare space-defence technology crossover. |
| Ballistic Missile Defence (BMD) | India's layered system to intercept incoming ballistic missiles (Prithvi Defence Vehicle PDV + Advanced Area Defence AAD) | India's BMD programme was partly motivated by the need to also protect against enemy Agni-equivalents. MIRV on Agni-5 specifically designed to overwhelm enemy BMD systems. |
India completed its nuclear triad in 2016 when INS Arihant (first indigenous SSBN โ nuclear-powered ballistic missile submarine) became operational. It carries K-15 (750 km range) and K-4 (3,500 km range) submarine-launched ballistic missiles (SLBMs). INS Arighaat (second SSBN) commissioned 2024.
| Country | Key Missile | Range | Type | MIRV? | Nuclear Doctrine |
|---|---|---|---|---|---|
| ๐ฎ๐ณ India | Agni-1 | 700โ1,200 km | SRBM | No | No First Use (NFU) + Credible Minimum Deterrence |
| ๐ฎ๐ณ India | Agni-5 | 5,000โ8,000 km | IRBM/ICBM | โ Yes (2024 โ Mission Divyastra) | |
| ๐ฎ๐ณ India | Agni-P | 1,000โ2,000 km | MRBM | Planned | |
| ๐ฎ๐ณ India | K-15 (SLBM) | ~750 km | SLBM | No | |
| ๐จ๐ณ China | DF-21 (CSS-5) | 1,750โ2,150 km | MRBM | No | No First Use (China); but building up rapidly |
| ๐จ๐ณ China | DF-41 (CSS-X-20) | 12,000โ15,000 km | ICBM | โ Yes | |
| ๐จ๐ณ China | JL-3 (SLBM) | 9,000+ km | SLBM | โ Yes | |
| ๐ต๐ฐ Pakistan | Nasr (Hatf-IX) | 60โ70 km | TNW (SRBM) | No | First Use policy โ will use nukes if facing conventional defeat |
| ๐ต๐ฐ Pakistan | Shaheen-III | 2,750 km | MRBM | No | |
| ๐ต๐ฐ Pakistan | Ababeel | 2,200 km | MRBM | Claimed (contested) |
Mission Divyastra (11 March 2024): India tested Agni-5 with MIRV โ became the 6th country globally with demonstrated MIRV capability. Second successful MIRV test: 8 May 2026 from Abdul Kalam Island, Odisha. DRDO considering operational induction after further trials.
After Agni-P rail launch (September 24, 2025), India joined Russia, USA, and China as nations capable of launching ballistic missiles from rail-mobile platforms โ significantly enhancing survivability and strategic ambiguity.
Pakistan does NOT possess long-range missiles or nuclear submarines. Its longest-range operational missile is Shaheen-III (2,750 km). India's Agni-5 (5,000+ km) + MIRV + emerging SSBN fleet puts India in a qualitatively different league than Pakistan but still trailing China significantly.
Agni-1 SRBM test-launched from ITR Chandipur, Odisha on 22 May 2026 (today) under the aegis of the Strategic Forces Command. The launch validated all operational and technical parameters. MoD statement: "Short-Range Ballistic Missile 'Agni-1' was successfully test-launched from the Integrated Test Range at Chandipur, Odisha." This is the most direct UPSC Prelims 2026 hook for this topic.
India successfully flight-tested an Advanced Agni ballistic missile equipped with MIRV (Multiple Independently Targetable Re-entry Vehicle) technology from Dr. APJ Abdul Kalam Island, Odisha โ the second MIRV-capable Agni test after Mission Divyastra (March 2024). DRDO confirmed the launch via official social media on 9 May 2026. Defence Minister Rajnath Singh connected the test to India's "growing threat perceptions." Multiple ground and ship-based telemetry stations validated the full operational trajectory. Analysts at MP-IDSA assessed: system could be operationalised in the near future.
Agni-3 IRBM (range 3,000โ3,500 km) successfully test-fired from ITR, Chandipur, Odisha on 6 February 2026, under the Strategic Forces Command. All operational and technical parameters validated. Agni-3 is a two-stage, solid-propellant missile with a payload of ~1,500 kg capable of carrying nuclear warheads. The SFC confirmed reliability of the system as part of India's nuclear deterrence framework.
Agni-Prime (Agni-P) ballistic missile launched for the first time from a rail-based mobile launcher โ a historic first for India. The launcher can move seamlessly on India's rail network without preconditions. Agni-P is a two-stage canisterised MRBM with 1,000โ2,000 km range and MIRV capability. This placed India among only four nations globally (Russia, USA, China, India) capable of launching ballistic missiles from rail platforms. SFC + DRDO conducted the launch.
Agni-5 IRBM/ICBM (5,000+ km range) test-fired from ITR, Chandipur, Odisha on 20 August 2025 under the Strategic Forces Command. All operational and technical parameters validated. This was a user validation trial โ confirming SFC operational readiness with the system following the MIRV demonstration in March 2024. India's Agni-5 (5,000+ km) can reach all of China including Beijing, Shanghai, and northern provinces.
Four major Agni tests in 12 months: Agni-5 (Aug 20, 2025) ยท Agni-P rail launch (Sep 24, 2025) ยท Agni-3 (Feb 6, 2026) ยท Agni MIRV (May 8, 2026) ยท Agni-1 (May 22, 2026 โ today). This cluster of tests is a strong Prelims 2026 signal. Know: which missile, which launch site, which body conducted the test, what was validated.
| Statement | True / False | Reason |
|---|---|---|
| "Ballistic missiles are jet-propelled at subsonic speeds throughout their flights." (UPSC Prelims 2023) | โ FALSE | Ballistic missiles are rocket-propelled only in the boost phase; rest of flight is unpowered ballistic trajectory. Cruise missiles are jet-propelled throughout. |
| "Agni-V is a medium-range supersonic cruise missile." (UPSC Prelims 2023) | โ FALSE | Agni-5 is an Intermediate-Range (or ICBM-class) Ballistic Missile, NOT a cruise missile. BrahMos is the supersonic cruise missile. |
| "Agni-1 was the first missile to be inducted under the Strategic Forces Command." | โ TRUE | Prithvi-II (tactical) was inducted into SFC first (2003), but Agni-1 was the first nuclear-capable ballistic missile in the strategic sense, inducted 2007. Trap: Prithvi-II was inducted into SFC in 2003. |
| "Agni-1 is a two-stage, liquid-fuelled missile." | โ FALSE | Agni-1 is a single-stage, solid-fuelled missile. Agni-2, 3, 4, 5 are multi-stage. No Agni missile uses liquid fuel โ all are solid-propellant. |
| "Mission Divyastra (2024) was India's first MIRV test on Agni-5, making India the 5th MIRV nation." | โ FALSE | India became the 6th MIRV nation (after USA, Russia, UK, France, China) โ not the 5th. This is a common number trap. |
| "Agni-P (Agni-Prime) is heavier than Agni-3." | โ FALSE | Agni-P weighs 11,000 kg โ it is actually half the weight of Agni-3 (50,000 kg). Agni-P is the lightest in the Agni series. |
| "India joined the MTCR in 2016 as its 35th member." | โ TRUE | Verified fact. MTCR (Missile Technology Control Regime) restricts transfer of missile tech >300 km range / 500 kg payload. India's entry strengthened its case for NSG membership. |
| "BrahMos is a ballistic missile developed by DRDO." | โ FALSE | BrahMos is a supersonic cruise missile jointly developed by India (DRDO) and Russia (NPO Mashinostroyeniya) โ NOT a ballistic missile. Joint venture, not solely DRDO. |
PIB May 2026 and some sources call Agni-1 a "Short-Range Ballistic Missile" (SRBM); others and CSIS classify it as MRBM. UPSC follows MoD / PIB language. In the exam, the correct answer will match the MoD official language. Don't let MRBM trap you into thinking 700 km is medium-range โ it's at the SRBM/MRBM boundary.
Students often write India became the 5th MIRV nation. Correct answer: 6th (USA, Russia, UK, France, China, then India in 2024). Always recall this order: the P5 nuclear states had MIRV first, India joined sixth.
MoD/DRDO officially calls Agni-5 an "Intermediate Range Ballistic Missile" (IRBM). However, with range 5,000โ8,000 km (exceeding the 5,500 km ICBM threshold), many global analysts classify it as an ICBM. In UPSC questions, go with the MoD's "Intermediate Range" classification if that's the phrasing used.
Both are part of ITR (Integrated Test Range), Odisha. Chandipur = LC-III (shorter-range tests; Agni-1, Agni-3, Agni-5 also). Abdul Kalam Island = LC-IV (longer-range strategic tests). Both have been used for multiple Agni variants โ don't assume only one site is used for each missile. The PIB specifies the exact site for each test.
India is NOT a signatory to the Nuclear Non-Proliferation Treaty (NPT). It has never signed it. However, India did receive a waiver from the NSG in 2008 for civilian nuclear commerce โ often confused with NPT membership. India is also NOT a member of the NSG (China blocks it).
The UPSC Prelims 2023 question on ballistic vs cruise missiles tested conceptual understanding, NOT rote facts. Expect UPSC to similarly test: "Agni-5 is a cruise missile" (FALSE), "MIRV enables one missile to strike multiple targets" (TRUE), "BrahMos is developed solely by DRDO" (FALSE โ it's a joint venture with Russia).
UPSC's Science & Technology questions on missiles heavily favour: (1) Classification type (SRBM/MRBM/IRBM/ICBM vs cruise), (2) Development body (DRDO vs ISRO vs joint), (3) Doctrine connections (NFU, NCA, SFC), (4) Recent test facts (launch site, date, body). Study all five MCQs above โ these are the exact pattern areas.
| Variant | Range | Type | Status | Must-Know Fact |
|---|---|---|---|---|
| Agni-1 | 700โ1,200 km | SRBM | โ Op. (2007) | Tested Chandipur 22 May 2026; single-stage; 1st inducted |
| Agni-2 | 2,000 km | MRBM | โ Op. (2010) | Two-stage; covers Pakistan + W. China |
| Agni-3 | 3,500 km | IRBM | โ Op. (2011) | Tested Chandipur Feb 6, 2026 |
| Agni-4 | 4,000 km | IRBM | โ Op. (2024 user test) | Lighter than Agni-3 despite longer range |
| Agni-5 | 5,000โ8,000 km | IRBM/ICBM | โ Op. + MIRV (2024) | Mission Divyastra (2024); 6th MIRV nation; canisterised |
| Agni-P | 1,000โ2,000 km | MRBM | ๐ถ Pre-induction | Lightest (11 t); Rail-mobile launch Sep 2025; MIRV-planned |
| Agni-6 | 10,000โ12,000 km | ICBM | ๐ด Under dev. | 10โ11 MIRV warheads; DRDO ready, awaiting govt approval |