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Static GK & Current Affairs Basics6 min readUPSC CSESSC CGLSSC CHSLRRB NTPC

Map-Based GK: Straits, Channels, Lakes & Capitals

The world's chokepoint straits, India's island channels, key Indian and world lakes, and the capitals exams love to twist. Built for map practice.

60-second revision

  • Palk Strait: India–Sri Lanka. Strait of Malacca: Malay Peninsula–Sumatra.
  • Hormuz: Persian Gulf to Gulf of Oman. Bab-el-Mandeb: Red Sea to Gulf of Aden.
  • Bosporus: Black Sea–Sea of Marmara; Dardanelles: Marmara–Aegean.
  • Ten Degree Channel: Little Andaman–Car Nicobar. Nine Degree: Minicoy–Kalpeni. Eight Degree: Minicoy–Maldives.
  • Wular: largest freshwater lake in India. Chilika: largest brackish lagoon. Sambhar: largest inland salt lake.
  • Loktak (Manipur) holds Keibul Lamjao, the floating national park on phumdis.
  • Baikal is the deepest lake; the Caspian Sea is the largest by area.
  • Capitals: Myanmar Naypyidaw; South Africa Pretoria, Cape Town, Bloemfontein; Kazakhstan Astana.

How to handle 'places in the news'

Whenever a place appears in the news — a strait during a shipping crisis, a lake in a conservation story, a capital hosting a summit — fix three things: which countries or states border it, which water bodies it connects, and one distinguishing fact. Mark it on a blank map the same week. UPSC often asks places in north-to-south or west-to-east order, so learn their relative positions, not just their names.

World straits and canals

Strait / canalBetween (land)Connects (water)
Palk StraitIndia and Sri LankaBay of Bengal and Palk Bay
Strait of MalaccaMalay Peninsula and SumatraAndaman Sea and South China Sea
Sunda StraitJava and SumatraJava Sea and Indian Ocean
Strait of HormuzIran and Oman (Musandam)Persian Gulf and Gulf of Oman
Bab-el-MandebYemen and Djibouti/EritreaRed Sea and Gulf of Aden
Suez Canal (1869)EgyptMediterranean Sea and Red Sea
Strait of GibraltarSpain and MoroccoMediterranean Sea and Atlantic Ocean
BosporusIstanbul, TurkeyBlack Sea and Sea of Marmara
DardanellesTurkey (Gallipoli peninsula)Sea of Marmara and Aegean Sea
Strait of DoverEngland and FranceNorth Sea and English Channel
Bering StraitRussia and Alaska (USA)Arctic Ocean and Bering Sea
Panama Canal (1914)PanamaAtlantic and Pacific Oceans

India's island channels

ChannelSeparates
Coco ChannelNorth Andaman and Coco Islands (Myanmar)
Duncan PassageSouth Andaman and Little Andaman
Ten Degree ChannelLittle Andaman and Car Nicobar (Andaman group from Nicobar group)
Six Degree ChannelGreat Nicobar and Sumatra (Indonesia)
Nine Degree ChannelMinicoy and Kalpeni/Suheli (main Lakshadweep group)
Eight Degree ChannelMinicoy and the Maldives

Indian lakes

LakeState / UTDistinguishing fact
WularJammu and KashmirLargest freshwater lake in India; fed by the Jhelum
DalJammu and KashmirSrinagar's lake of houseboats and floating gardens
ChilikaOdishaLargest brackish-water lagoon in India; among India's first Ramsar sites (1981)
PulicatAndhra Pradesh–Tamil NaduSecond-largest brackish lagoon; Sriharikota island separates it from the sea
VembanadKeralaLongest lake in India
KolleruAndhra PradeshFreshwater lake between the Godavari and Krishna deltas
LoktakManipurPhumdis; Keibul Lamjao, the floating national park, home of the sangai deer
SambharRajasthanLargest inland salt lake in India
Pangong TsoLadakh (and Tibet)High-altitude brackish lake across the Line of Actual Control

World lakes

  • Caspian Sea: largest lake by area (salt water), bordered by five countries.
  • Lake Baikal (Russia): deepest and oldest lake; largest freshwater lake by volume.
  • Lake Superior (North America): largest freshwater lake by surface area.
  • Lake Victoria: largest lake in Africa; source of the White Nile.
  • Lake Titicaca (Peru–Bolivia): often called the highest navigable lake.
  • Dead Sea (Jordan–Israel): its shore is the lowest point on land.

Capitals that exams twist

CountryCapitalCommon wrong answer
MyanmarNaypyidaw (since 2005–06)Yangon
Sri LankaSri Jayawardenepura Kotte (official); Colombo (commercial)Colombo alone
Bhutan / Nepal / MaldivesThimphu / Kathmandu / MaleParo / Pokhara
AustraliaCanberraSydney
CanadaOttawaToronto
BrazilBrasilia (since 1960)Rio de Janeiro
TurkeyAnkaraIstanbul
NigeriaAbuja (since 1991)Lagos
KazakhstanAstana (called Nur-Sultan 2019–2022)Almaty
South AfricaPretoria (executive), Cape Town (legislative), Bloemfontein (judicial)Johannesburg
BoliviaSucre (constitutional); La Paz (seat of government)La Paz alone

Test yourself: 10 questions, 35 s each

Every answer is explained. Free, no sign-up.

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