NDA Geography · Free notes
World and Human Geography — NDA Geography
This is the 'atlas' chapter of NDA Geography — 26 PYQs across 2017–2026 that reward a student who has actually looked at a world map. Almost none of it is derivation; it is named-fact recall: which river drains where, which canal links which seas, where the Prime Meridian runs, which city was the first megacity, where a famous desert sits. The marks come from coverage, not cleverness, so the chapter is built as a set of reference tables you drill until the names stick — plus a small handful of 'why' concepts (longitude and local time, the International Date Line) that follow a simple rule rather than a list. It teaches in three movements, from physical features to coordinates to people: (1) World rivers, canals and water bodies — the Suez and Panama canals, landlocked seas, the Great Artesian Basin, Ramsar wetlands; (2) Coordinates, time and place — latitude/longitude, GMT offsets, the Prime Meridian and the International Date Line; (3) Human geography — megacities, population density, and the world-places gazetteer (deserts, mountains, island groups, organisation headquarters). 11 concepts, every PYQ tagged. The questions skew EASY-to-MODERATE; the only HARD ones hide a place-fact inside a multi-statement stem.
The handout has every subtopic, worked example, formula and trap with answers shown. The formula sheet is the chapter’s formulas and traps alone, on one page.
Subtopic notes
World Rivers, Canals and Water Bodies
6 PYQsThe world's two great ship canals (Suez and Panama), the seas they link, the landlocked water bodies, and a few named river/wetland facts the NDA returns to.
World Coordinates, Time and Place
4 PYQsHow latitude and longitude fix a place on the globe, how longitude controls local time (GMT offsets, the Prime Meridian) and what happens when you cross the International Date Line.
Human Geography — Megacities, Population and World Places
16 PYQsMegacities and the three population-density measures, plus the world-places gazetteer the NDA draws on — deserts, mountains, island groups, landlocked countries and the headquarters of global organisations.
Formula & revision sheet
0 formulas · 5 reference tables · 6 gotchas across all subtopics — the exam-eve cheat-sheet
Formula & revision sheet
0 formulas · 5 reference tables · 6 gotchas across all subtopics — the exam-eve cheat-sheet
Reference tables (2)
The Suez and Panama Canals2 rows
| Canal | Links | Locks? | Opened |
|---|---|---|---|
| Suez | Mediterranean Sea ↔ Red Sea | NO locks | 1869 NDA 2019 — the 'six lock system' claim about Suez is the FALSE statement (Suez is sea-level, no locks). |
| Panama | Atlantic Ocean ↔ Pacific Ocean | Has locks | 1914 |
Landlocked seas, rivers and wetlands4 rows
| Feature | Key fact |
|---|---|
| Landlocked water body | Caspian Sea NDA 2024 — the Caspian Sea is landlocked; the Mediterranean, Black and Red Seas are not. |
| Helmand River | Hindu Kush → Hamoun wetlands; Afghanistan–Iran water dispute NDA 2023 — identify the river by the Hindu Kush origin + Hamoun destination. |
| Great Artesian Basin | Mostly under Queensland, Australia |
| India's Ramsar sites | 27 (as tested) |
Watch out for (2)
- Suez has no locks; Panama does→ The Suez and Panama Canals
- The Caspian is a 'Sea' in name but landlocked in fact→ Landlocked seas, rivers and wetlands
Watch out for (2)
- East = ahead, but the DATE line is the opposite→ Longitude, GMT offsets and the Prime Meridian
- East across the date line LOSES 24 hours→ The International Date Line
Reference tables (3)
World deserts and country nicknames3 rows
| Place | Fact |
|---|---|
| Atacama | World's driest desert (South America) NDA 2018 — Atacama is the driest desert, not the Sahara or Gobi. |
| Taklamakan | Cold desert of Central Asia (China) NDA 2017 — Taklamakan is in Central Asia. |
| Denmark | Called the 'country of winds' NDA 2020 — Denmark is the 'country of winds'. |
Rivers, mountains, oceans and island groups5 rows
| Place | Fact |
|---|---|
| Mekong Delta | Vietnam |
| Caucasus Mountains | Lie between the Caspian Sea and the Black Sea NDA 2020 — the Caucasus separates the Caspian and Black Seas. |
| Panama Canal | Links the Atlantic and Pacific Oceans NDA 2020 — Panama joins the Atlantic to the Pacific. |
| New Zealand | Part of Polynesia |
| Adelaide | Known for viticulture (wine) |
Global organisations and environmental conventions4 rows
| Topic | Fact |
|---|---|
| WMO headquarters | Geneva NDA 2017 — the World Meteorological Organization is in Geneva. |
| Cartagena Protocol (2000) | Biosafety, under the Convention on Biological Diversity NDA 2020 — the Biosafety Protocol is the Cartagena Protocol. |
| Eastern Canada issue | Acid precipitation |
| Biosphere Reserve idea | UNESCO, 1973–74 NDA 2020 — true: UNESCO 1973–74; false: 'all Indian reserves are in the UNESCO network'. |
Watch out for (2)
- Driest is not the same as biggest→ World deserts and country nicknames
- 'All Indian Biosphere Reserves are in the UNESCO network' is FALSE→ Global organisations and environmental conventions
PYQ weightage by concept
11 concepts · 26 PYQs — where the marks actually sit, so you know what to drill first
PYQ weightage by concept
11 concepts · 26 PYQs — where the marks actually sit, so you know what to drill first
| Concept | PYQs | Share |
|---|---|---|
| Landlocked seas, rivers and wetlands | 4 | 15% |
| The Suez and Panama Canals | 1 | 4% |
| Reading a Suez Canal statement set | 1 | 4% |
| Concept | PYQs | Share |
|---|---|---|
| Longitude, GMT offsets and the Prime Meridian | 2 | 8% |
| Latitude, longitude and locating a place | 1 | 4% |
| The International Date Line | 1 | 4% |
| Concept | PYQs | Share |
|---|---|---|
| Rivers, mountains, oceans and island groups | 5 | 19% |
| Global organisations and environmental conventions | 4 | 15% |
| Megacities and population density | 3 | 12% |
| World deserts and country nicknames | 3 | 12% |
| Landlocked countries | 1 | 4% |
Test yourself on World and Human Geography
10 past NDA questions from this chapter, timed at 10 minutes and marked the way the exam marks it. You see your score and every answer the moment you finish. Free to start.