On 22 July 2026, the government told Parliament that the National Center for Seismology (NCS) had recorded a cluster of small earthquakes in the Kangra–Chamba–Dharamshala belt of Himachal Pradesh — a region that lies in Seismic Zone V, India's highest earthquake-hazard category. For a CDS/OTA aspirant, earthquakes are a core physical-geography topic, and India's seismic zoning is exactly the kind of map-based, factual content the exam favours — with a strong link to disaster management.
The news in one frame
The essentials:
- What: a cluster of small earthquakes recorded in the Kangra–Chamba region (Himachal Pradesh).
- Who monitors: the National Center for Seismology (NCS), under the Ministry of Earth Sciences.
- Zone: the belt lies in Seismic Zone V — the highest-risk zone.
- History: the same region saw the devastating 1905 Kangra earthquake (~M7.8, 20,000+ deaths).
What is an earthquake?
Start with the science. An earthquake is a sudden shaking of the ground caused by the release of energy stored in the Earth's crust — usually when rocks along a fault break and slip. This energy travels outward as seismic waves. Key terms — a favourite factual set:
- Focus (hypocentre) — the point inside the Earth where the earthquake originates.
- Epicentre — the point on the surface directly above the focus.
- Seismic waves — P-waves (primary, fastest, travel through solids and liquids), S-waves (secondary, slower, only through solids), and surface waves (the most damaging).
- Seismograph/seismometer — the instrument that records earthquakes.
The magnitude (energy released) is measured on the Richter scale (and the modern Moment Magnitude scale); the intensity (damage felt) on the Mercalli scale. This physical geography is exactly what the CDS/OTA geography notes build.
Why India — plate tectonics
The examinable cause is plate tectonics:
- The Earth's outer shell is broken into tectonic plates that slowly move; earthquakes cluster along plate boundaries.
- The Indian Plate is colliding with the Eurasian Plate, moving north at about 5 cm per year — this collision created the Himalayas and continues to build stress in the crust.
- Because the Himalayas are young and still rising, the whole belt is seismically very active — which is why the Kangra–Chamba region and the North-East are so earthquake-prone.
So India's biggest earthquake risk runs along the Himalayan arc. These themes recur in the CDS/OTA daily current affairs.
India's seismic zones
The core map-based fact: the Bureau of Indian Standards (BIS) divides India into seismic zones for earthquake-resistant construction:
- Zone V — the highest risk: the North-East, Kashmir, Himachal (Kangra), Uttarakhand, the Kutch region of Gujarat, and the Andaman & Nicobar Islands.
- Zone IV — high risk: Delhi-NCR, parts of the Indo-Gangetic plains, Jammu, and northern Bihar.
- Zone III — moderate risk.
- Zone II — the lowest risk (most of the peninsular/Deccan interior).
(A revised BIS code in 2025 further sharpened this map — adding a top Zone VI for the Himalayan arc — but the classic II–V framework, with V highest and II lowest, remains the standard reference.) The revision hook: earthquake = crust releases energy along a fault; focus (underground) vs epicentre (surface above); magnitude on the Richter/Moment scale; caused by Indian Plate colliding Eurasian Plate (~5 cm/yr), building the Himalayas; BIS seismic Zones II–V (V = highest risk: NE, Himalayas, Kutch, Andaman); NCS (Ministry of Earth Sciences) monitors.
Disaster management — reducing the risk
Round out with the preparedness angle the exam pairs with earthquakes:
- India cannot predict earthquakes, so the focus is on mitigation and preparedness.
- Earthquake-resistant building codes (from the BIS zoning), retrofitting, and land-use planning cut damage.
- The National Disaster Management Authority (NDMA, 2005), chaired by the PM, issues guidelines; the NDRF responds.
- The Disaster Management Act, 2005 provides the legal framework; early-warning and public awareness save lives.
Related earth-movement concepts
A little more depth the exam rewards — earthquakes link to several ideas:
- Tsunami — a series of huge sea waves triggered by an undersea earthquake (as in the 2004 Indian Ocean tsunami); India built an early-warning system (INCOIS, Hyderabad) after it.
- Fault — a fracture in the crust where rocks move; the Main Boundary Thrust and Main Central Thrust run along the Himalayas.
- Aftershocks and foreshocks — smaller quakes that follow (or precede) the main shock.
- Liquefaction — water-saturated soil temporarily behaving like a liquid during strong shaking, causing buildings to sink or tilt.
Also worth knowing: earthquakes and volcanoes cluster along plate boundaries — the "Pacific Ring of Fire" is the most active belt. India's peninsula is comparatively stable (an old shield), which is why the Deccan sits in the lower zones while the young Himalayas carry the highest risk. These links round out a strong geography answer, alongside the CDS/OTA geography material.
Why it matters
For the essay/interview and bigger picture:
- Human safety: a large Himalayan earthquake could threaten millions in densely populated northern India.
- Preparedness over prediction: since prediction isn't possible, resilient buildings and readiness are key.
- Development link: safe infrastructure in high-risk zones is essential for sustainable, disaster-resilient growth.
Exam relevance in one paragraph
For CDS/OTA GK, retain: an earthquake releases energy along a fault, originating at the focus (hypocentre) underground, with the epicentre being the surface point directly above; magnitude is measured on the Richter/Moment Magnitude scale and intensity on the Mercalli scale, recorded by a seismograph; India's earthquakes arise from the Indian Plate colliding with the Eurasian Plate (~5 cm/year), which built the still-rising Himalayas; the BIS divides India into seismic Zones II–V, with Zone V (highest risk) covering the North-East, Kashmir, Himachal (Kangra), Kutch and the Andaman & Nicobar Islands; the National Center for Seismology (Ministry of Earth Sciences) monitors quakes, and the NDMA (2005) leads disaster management. For the essay, frame it as building resilience where prediction is impossible.
🎯 Practice MCQs
Q1. The point inside the Earth where an earthquake originates is the: (a) focus (hypocentre) (b) epicentre (c) fault line (d) crust → (a) — the focus.
Q2. The point on the surface directly above the focus is the: (a) epicentre (b) focus (c) fault (d) magnitude → (a) — the epicentre.
Q3. Which seismic wave is the fastest and can travel through both solids and liquids? (a) P-wave (b) S-wave (c) surface wave (d) sound wave → (a) — the P-wave (primary).
Q4. S-waves (secondary waves) can travel through: (a) only solids (b) only liquids (c) only gases (d) everything → (a) — solids only.
Q5. Earthquake magnitude is measured on the: (a) Richter (Moment Magnitude) scale (b) Mercalli scale (c) Beaufort scale (d) Celsius scale → (a) — the Richter / Moment Magnitude scale.
Q6. Indian earthquakes are mainly caused by the Indian Plate colliding with the: (a) Eurasian Plate (b) Pacific Plate (c) African Plate (d) Antarctic Plate → (a) — the Eurasian Plate.
Q7. The highest-risk earthquake zone in India is: (a) Zone V (b) Zone II (c) Zone I (d) Zone III → (a) — Zone V.
Q8. Which region lies in Seismic Zone V? (a) the North-East and Himalayas (b) the Deccan interior (c) the Thar Desert (d) coastal Tamil Nadu → (a) — the North-East, Kashmir, Himachal, Kutch, Andaman.
Q9. India's seismic zoning map is prepared by the: (a) Bureau of Indian Standards (BIS) (b) SEBI (c) TRAI (d) NITI Aayog → (a) — the BIS.
Q10. Earthquakes are recorded by an instrument called a: (a) seismograph (b) barometer (c) anemometer (d) hygrometer → (a) — a seismograph.
Q11. Earthquake monitoring in India is done by the: (a) National Center for Seismology (b) ISRO (c) IMD only (d) SEBI → (a) — the NCS (Ministry of Earth Sciences).
Q12. The 1905 Kangra earthquake occurred in which state? (a) Himachal Pradesh (b) Kerala (c) Gujarat (d) Assam → (a) — Himachal Pradesh.
Q13. The Indian Plate moves towards Eurasia at about: (a) 5 cm/year (b) 5 km/year (c) 5 m/year (d) 5 mm/century → (a) — about 5 cm per year.
Q14. The intensity (damage) of an earthquake is measured on the: (a) Mercalli scale (b) Richter scale (c) pH scale (d) decibel scale → (a) — the Mercalli scale.
Q15. The apex body for disaster management in India is the: (a) NDMA (b) NCS (c) NBA (d) CAQM → (a) — the National Disaster Management Authority (chaired by the PM).
📋 How this gets asked (PYQ pattern)
Earthquakes are a high-frequency CDS/OTA geography set. The reliable framings are focus vs epicentre, P- vs S-waves, the plate-tectonics cause (Indian–Eurasian collision), and seismic Zone V (highest) regions. A common trap swaps focus and epicentre or says S-waves travel through liquids (they don't). The fresh 2026 hook is the Kangra–Chamba seismic activity — ideal for "which zone / which wave / which plate" items. We reference the pattern, not any exact past question.
Preparing for CDS or OTA? Earthquakes, plate tectonics and disaster management are high-yield geography topics and strong essay material on resilience. Follow our daily CDS/OTA current affairs and train with serving-officer faculty in the upcoming Cavalier courses in Delhi.
✍️ Written by Aditya Tiwari — Economy, geography & current-affairs 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 / National Center for Seismology, Ministry of Earth Sciences, 22 July 2026. Facts cross-verified with independent sources.