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1.In the context of the Pacific Ocean, the term "Thermocline" refers to:
- AA surface layer where temperature is constant year‑round
- BA sharp vertical temperature gradient separating warm surface water from cold deep water, typically located at 100–500 m depth
- CA horizontal front separating warm and cold currents
- DA zone of intense upwelling along the equator
Explanation
A thermocline is a layer in which temperature decreases rapidly with depth. In the Pacific, it often lies between 100 m and 500 m and plays a crucial role in the vertical structure of currents.
2.The 'Lake of Two Islands' (Lake Poyang) in China plays a crucial role in the annual migration of which endangered bird species?
- ASpoon‑billed Sandpiper
- BWhite‑fronted Goose
- CSiberian Crane
- DBlack‑necked Stork
Explanation
Lake Poyang, the largest freshwater lake in China, provides vital wintering habitat for the endangered Siberian Crane (Leucogeranus leucogeranus), among other migratory waterbirds.
3.In 2024, which country officially moved its capital from Lagos to a newly built city, as reflected in recent world maps?
- ANigeria
- BGhana
- CKenya
- DSouth Africa
Explanation
The Nigerian government announced the relocation of the federal capital from Lagos to the purpose‑built city of "Aso‑City" in the Niger Delta region. The change is reflected in the latest political maps released in early 2024.
4.The term 'Indonesian Throughflow' refers to:
- AThe transport of water from the Pacific to the Indian Ocean through the Indonesian archipelago
- BA surface current that flows around the Indian subcontinent
- CA subsurface current linking the Arabian Sea and Bay of Bengal
- DA seasonal wind system over the Indian Ocean
Explanation
The Indonesian Throughflow is a major inter‑ocean exchange that moves warm, low‑salinity Pacific water into the Indian Ocean via the complex passages of the Indonesian islands.
5.Which gulf is the deepest among the world’s gulfs, reaching depths exceeding 2,500 metres?
- AGulf of Mexico
- BPersian Gulf
- CGulf of Alaska
- DGulf of Oman
Explanation
The Gulf of Oman, the narrow waterway linking the Arabian Sea with the Strait of Hormuz, attains depths of more than 2,500 m, making it the deepest of the listed gulfs. The other gulfs are comparatively shallow.
6.According to the United Nations, a 'megacity' is defined as a city with a population of:
- A5 million or more
- B10 million or more
- C15 million or more
- D20 million or more
Explanation
The UN defines a megacity as an urban agglomeration with a total population of 10 million or more.
7.Which of the following cities is located in the Rocky Mountains and is known for its ski resorts?
- ADenver
- BSalt Lake City
- CAspen
- DJackson
Explanation
Aspen, located in Colorado, is a city in the Rocky Mountains known for its world-class ski resorts, including Aspen Mountain, Aspen Highlands, Buttermilk, and Snowmass.
8.The "Belt and Road Initiative" (BRI) aims to develop industrial corridors across continents. Which of the following BRI corridors is primarily focused on linking Central Asian mineral resources to European markets?
- AChina‑Pakistan Economic Corridor
- BSilk Road Economic Belt
- CMaritime Silk Road
- DBangladesh‑Myanmar‑India Economic Corridor
Explanation
The Silk Road Economic Belt, part of the BRI, creates overland routes connecting Central Asian resource bases with Europe, encouraging industrial and logistical development.
9.The East African Rift system has split the African continent into two major plates. Which plateau lies on the eastern side of this rift?
- AKenyan Highlands
- BEthiopian Plateau
- CMozambique Plateau
- DSomali Plateau
Explanation
The Somali Plateau (also called the Somali Basin) is situated on the eastern side of the East African Rift, whereas the Ethiopian Plateau lies on the western side.
10.Which of the following countries is an example of a "negative net migration" country (more people leaving than arriving) despite having a positive natural increase?
- ACanada
- BGermany
- CMexico
- DAustralia
Explanation
Germany records a natural increase (more births than deaths) but experiences net out‑migration because many residents move abroad for work or study, resulting in a negative net migration balance.
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These are sample questions with their answers. Log in to attempt them, track your accuracy, earn coins and save every session to your history.