All practice questions

Before executing major development projects in Nigeria—such as large-scale agricultural schemes, highway construction, or industrial estates—developers are statutorily required to evaluate potential ecological impacts and propose mitigation measures. Which legislative instrument mandates this evaluation prior to project commencement?

A demographic survey of a rural sub-county in East Africa with a total population of $500{}000$ records $180{}000$ children aged $0\text{--}14$, $20{}000$ elderly persons aged $65$ and above, and $300{}000$ adults in the $15\text{--}64$ age bracket. Following a severe environmental drought, many residents move toward urban centers while remaining farmsteads cluster tightly along the main arterial road. Which of the following statements correctly evaluates the demographic metrics or population dynamics of this sub-county?

Arrange the following African vegetation zones in descending order of their commercial hardwood timber yield and forest biomass density, starting with the zone of highest potential.

While primary petrochemical refining and resin synthesis in Nigeria are located near coastal oilfields in the Niger Delta (such as at Port Harcourt and Warri), secondary plastic and synthetic consumer goods manufacturing is heavily concentrated in the Lagos–Ota industrial zone. Which geographical factor primarily accounts for this spatial distribution of secondary polymer manufacturing?

In spatial agricultural location theory, an isolated central market is surrounded by a uniform plain. If freight rate is directly proportional to product weight and perishability, which of the following best explains why intensive market gardening occupies the innermost ring closest to the market city while extensive livestock ranching operates in the outermost ring?

The Gezira Scheme in Sudan utilizes gravity-flow irrigation from the Sennar Dam on the Blue Nile to support large-scale agricultural production. Which major cash crop is primarily cultivated under this scheme for international export?

Arrange the following sequential stages involved in the agro-allied manufacturing of cocoa products in Southwestern Nigeria, from raw agricultural harvesting to the final industrial extraction stage.

Match each of the following major African mining centers with its principal mineral resource.

A drainage pattern where streams converge from surrounding elevated areas into a central inland depression or lake is best described as which of the following?

An inland freight transport authority is evaluating the connectivity of a regional railway network serving heavy industrial nodes in West Africa. In the baseline phase, the connected planar network ($p = 1$) consists of $8$ urban freight terminals (vertices) linked by $11$ direct rail corridors (edges). Following an expansion project, $2$ new freight terminals and $4$ additional rail corridors are integrated into the existing system. What is the net change in the topological Alpha index ($\alpha$) of the network as a result of this expansion?

A geography student carrying out a chain survey along a designated baseline encounters a wide pond that obstructs direct distance measurement but allows clear line-of-sight vision across it. To determine the exact chainage distance across this obstacle without crossing the water, which of the following fieldwork procedures using elementary surveying instruments is correct?

A topographic map drawn at a scale of $1 : 25,000$ shows a hillside where point P on a ridge has an elevation of $580\text{ m}$ and point Q near a river valley has an elevation of $430\text{ m}$. If the straight-line distance between P and Q measured on the map is $7.2\text{ cm}$, what is the value of $x$ when the average gradient between the two points is expressed in the ratio form $1 : x$?

In quantitative cartography, proportional circles are constructed such that the surface area of each circle is directly proportional to the statistical quantity being represented. On a demographic map of West Africa, a city with a population of $4,000,000$ is drawn using a proportional circle with a radius of $3.0\text{ cm}$. Which of the following is the correct radius required to represent a neighboring metropolitan city with a population of $16,000,000$ on the same map?

Match each urban settlement problem listed on the left with its corresponding primary geographical cause or characteristic on the right.

In satellite remote sensing, sensors are categorized based on their energy source. Which type of sensor generates its own electromagnetic energy to illuminate a target and measure the backscattered signal?

In a rural agricultural zone where farmers operate large, continuous commercial grain fields and land ownership is fragmented into individual private holdings, homesteads are built isolated from one another on their respective farmlands rather than grouped in a central village core. Which rural settlement pattern is formed under these conditions?

Match each transport mode or network topology on the left with its defining operational or spatial characteristic on the right.

Which international environmental agreement was specifically established to conserve wetlands of international importance, particularly as waterfowl habitats?

A solar power monitoring station at Site K, located at longitude $24^\circ\text{W}$, records local solar noon ($12:00\text{ PM}$). At the exact same instant, a remote telecommunication hub at Site M records its local solar time as $05:20\text{ PM}$. What is the longitude of Site M in degrees East?

A timber processing firm operating in the equatorial rainforest zone of Central Africa requires dense, durable wood for high-grade joinery and cabinet making. Which of the following options correctly identifies an indigenous timber species from this zone, its wood classification, and its primary economic application?