Which of the following (Port-Country) is not correctly matched?
- (a)Montevideo – Uruguay
- (b)Rotterdam – Netherland
- (c)Igarka – China
- (d)Jakarta – Indonesia
Correct — C, Igarka – China is the wrong pair. Igarka is a river port on the Yenisei River in Krasnoyarsk Krai, Siberia — it is in RUSSIA, not China. It lies above the Arctic Circle and was historically a major timber-exporting port. The other three pairs are all correct, so the incorrectly matched one is Igarka–China.
- (a)Montevideo – Uruguay — Correctly matched — Montevideo is the capital and chief port of Uruguay, on the Río de la Plata estuary.
- (b)Rotterdam – Netherland — Correctly matched — Rotterdam, on the Rhine-Meuse delta, is the largest port in Europe and lies in the Netherlands.
- (d)Jakarta – Indonesia — Correctly matched — Jakarta is the capital and principal port of Indonesia (its harbour is Tanjung Priok), on the island of Java.
This is a port-to-country matching test. Three pairs are standard capital/major ports — Montevideo (Uruguay), Rotterdam (Netherlands, Europe's biggest port) and Jakarta (Indonesia). The odd one out is Igarka, a Siberian river port on the Yenisei in Russia, wrongly paired here with China.
The examiner slips a little-known port among three familiar ones. Since Montevideo, Rotterdam and Jakarta are easily placed, the answer turns on knowing Igarka — a Russian Arctic timber port on the Yenisei, definitely not Chinese. When one name in a matching set is unfamiliar and the rest are clearly right, the unfamiliar one is usually the mismatch.
- Igarka: a river port on the Yenisei River in Krasnoyarsk Krai, Siberia, RUSSIA — north of the Arctic Circle; noted for timber exports.
- Montevideo: capital and chief port of Uruguay, on the Río de la Plata.
- Rotterdam: the largest seaport in Europe, in the Netherlands, on the Rhine-Meuse delta.
- Jakarta: capital and principal port of Indonesia, on Java (port area: Tanjung Priok).

- Not knowing Igarka is a Russian (Siberian) port and assuming the China pairing is right.
- Overthinking the three well-known correct pairs instead of focusing on the unfamiliar name.
UPPSC/UPSC set 'which pair is not correctly matched' items on ports, rivers, mountains and cities — one deliberately obscure entry usually carries the error.
No directly related past PYQ was found.
- practice — not a real PYQ
The Siberian port of Igarka lies on which river?
- (a)Ob
- (b)Lena
- (c)Yenisei
- (d)Amur
Answer(c) Yenisei — Igarka is a timber port on the Yenisei in Russia.
- practice — not a real PYQ
Which is the largest seaport in Europe?
- (a)Hamburg
- (b)Rotterdam
- (c)Antwerp
- (d)Marseille
Answer(b) Rotterdam — in the Netherlands, on the Rhine-Meuse delta.