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Question 6161Question →

In Von Thünen's model of agricultural land use, which of the following farming activities is located in the innermost zone closest to the central market?

Market gardening and dairying

Extensive grain farming

Nomadic pastoralism

Plantation agriculture

Show answer & explanation

Answer: Market gardening and dairying

Answer

Market gardening and dairying is located in the innermost zone closest to the market.

Market gardening and dairying yield highly perishable items like fresh milk and vegetables. To prevent spoilage and reduce transport costs for daily delivery, these intensive farming practices occupy the ring immediately surrounding the central urban market.

Step-by-Step Solution

Determine the main economic principles of Von Thünen's agricultural location model.

Land rent (bid-rent theory) and transportation costs of produce determine land use zoning around an isolated city.

Perishable goods demand high transport frequency and yield high revenue per unit area.

Identify which agricultural system produces commodities with the highest perishability.

Market gardening (vegetables/flowers) and dairying (fresh milk) have extremely high perishability.

Proximity to the city center reduces transport time and minimizes product spoilage.

Key Concept

Von Thünen's Model of Agricultural Land Use

Estimated Time:45s

Question 6162Question →

During wave refraction along an irregular, indented coastline featuring alternating resistant headlands and weaker rock bays, orthogonal wave energy lines bend as water depth decreases near the shore. Which of the following correctly describes the distribution of wave energy and its resulting geomorphic effect along this coastline?

Wave energy converges on headlands causing intensified erosion, while wave energy diverges within bays leading to sediment deposition.

Wave energy concentrates at the head of shallow bays to carve out steep upper-course river valleys and oxbow lakes.

Wave energy causes in-situ chemical decomposition of headland rocks without physical detachment or transportation of coastal sediments.

Wave energy subjects bay sediments to extreme thermal pressure, metamorphosing loose beach sand directly into slate bedrock.

Show answer & explanation

Answer: Wave energy converges on headlands causing intensified erosion, while wave energy diverges within bays leading to sediment deposition.

Answer

Wave energy converges on headlands causing intensified erosion, while wave energy diverges within bays leading to sediment deposition.

As deep-water waves approach an indented coastline, the section of the wave front off headlands enters shallow water first and slows down due to bottom friction. This causes the wave crests to bend (refract), concentrating wave orthogonals and energy onto the headlands, which drives high rates of hydraulic erosion. Conversely, in the deeper water of bays, the wave energy diverges over a wider area, creating low-energy environment suitable for sediment deposition and beach formation.

Step-by-Step Solution

Analyze the mechanics of wave refraction along an indented coastline.

Waves drag on the shallow seabed in front of headlands first, slowing down while the deeper parts of the wave front in bay areas continue moving faster.

Friction with the sea floor decreases wave speed in shallow water near headlands.

Determine the direction of wave orthogonals (energy paths).

Wave rays bend toward the headlands, causing energy lines to converge on headlands and spread out (diverge) inside bays.

Wave refraction redirects wave energy perpendicular to the shoreline contours.

Correlate energy concentration with geomorphic coastal features.

Convergence at headlands leads to high-energy destructive wave action (forming cliffs, caves, arches), while divergence in bays results in low-energy constructive wave action (forming beaches).

High energy density accelerates marine erosion, whereas low energy density promotes sediment deposition.

Key Concept

Wave Refraction and Coastal Energy Distribution

Question 6163Question →

A meteorologist at a meteorological station needs to determine the atmospheric pressure of the locality. Which weather instrument should be used for this measurement?

Mercury barometer

Hygrometer

Anemometer

Rain gauge

Show answer & explanation

Answer: Mercury barometer

Answer

Mercury barometer

Atmospheric pressure is the force exerted by the weight of the air column above a unit area. It is measured using a mercury barometer or aneroid barometer, expressed in units of millibars (mb) or millimeters of mercury (mmHg).

Step-by-Step Solution

Identify the target weather element from the prompt.

The parameter to measure is atmospheric pressure.

The station objective specifies determining air pressure.

Match atmospheric pressure to its standard measuring instrument.

Atmospheric pressure is recorded using a mercury barometer.

Barometers measure the weight per unit area exerted by the atmosphere, typically recorded in millibars (mb).

Key Concept

Atmospheric Pressure Measurement

Question 6164Question →

When traveling from the coastal region of southern Nigeria toward the northern border with Niger Republic, which sequence correctly lists the vegetation zones encountered in order?

Mangrove swamp, Tropical rain forest, Guinea savanna, Sudan savanna, Sahel savanna

Sahel savanna, Sudan savanna, Guinea savanna, Tropical rain forest, Mangrove swamp

Mangrove swamp, Guinea savanna, Tropical rain forest, Sudan savanna, Sahel savanna

Tropical rain forest, Mangrove swamp, Sudan savanna, Guinea savanna, Sahel savanna

Show answer & explanation

Answer: Mangrove swamp, Tropical rain forest, Guinea savanna, Sudan savanna, Sahel savanna

Answer

Mangrove swamp, Tropical rain forest, Guinea savanna, Sudan savanna, Sahel savanna

Nigeria's vegetation belts are governed by a south-to-north rainfall gradient. The high-rainfall coastal area supports Mangrove swamps, succeeded inland by Tropical rain forest, followed progressively by drier grassland belts: Guinea savanna, Sudan savanna, and finally Sahel savanna near the northern border.

Step-by-Step Solution

Identify the primary climatic control on Nigerian vegetation distribution

Annual precipitation and duration of the rainy season decrease steadily along a latitudinal gradient from south to north.

The maritime tropical air mass provides the highest moisture along the southern coast, which weakens progressively inland toward the northern border.

Trace the resulting vegetation belts from the southern coast to the far north

The sequence moves from coastal Mangrove swamp → Tropical rain forest → Guinea savanna (middle belt) → Sudan savanna → Sahel savanna (extreme north).

This progression directly corresponds to the decreasing moisture gradient across Nigeria.

Key Concept

South-to-North Latitudinal Vegetation Zonation in Nigeria

Question 6165Question →

Match each Information and Communication Technology (ICT) tool or system listed on the left with its primary commercial function or benefit on the right.

Click a left item, then click its matching right item

Show answer & explanation

Answer

Electronic Funds Transfer (EFT) matches with facilitating direct computer-based movement of financial funds from one bank account to another; Point of Sale (POS) Terminal matches with processing real-time electronic card payments and updating inventory records at merchant checkout counters; Electronic Data Interchange (EDI) matches with automating the standardized transmission of business documents such as invoices and purchase orders between companies; Electronic Commerce (E-Commerce) matches with enabling the buying, selling, and marketing of commercial goods and services over the internet.

Each ICT concept is matched to its direct commercial application: EFT is the system for account-to-account bank transfers; POS terminals handle retail checkouts and instant card processing; EDI automates paperless inter-firm document exchanges; and E-Commerce represents internet-based commercial trading.

Step-by-Step Solution

Analyze Electronic Funds Transfer (EFT).

EFT pertains specifically to banking automation and account-to-account money transfers.

Understanding inter-bank electronic fund processing.

Analyze Point of Sale (POS) Terminal.

POS terminals are retail hardware used to scan cards, capture sales data, and manage point-of-purchase transactions.

Identifying merchant electronic checkout technologies.

Analyze Electronic Data Interchange (EDI).

EDI standardizes inter-company paperless communication for order forms, invoices, and shipping notices.

Distinguishing structured enterprise document interchange from general web browsing.

Analyze Electronic Commerce (E-Commerce).

E-Commerce is the overall commercial model of conducting business transactions over online digital networks.

Defining online commercial trading.

Key Concept

Core ICT applications and their functional benefits in modern commercial transactions

Question 6166Question →

During an urban geography survey of a rapidly expanding metropolitan area, planners observed that low-income residential housing and industrial zones expand outward from the city center in wedge-shaped corridors along major railway lines and highways rather than in continuous concentric rings. Which urban land-use model best explains this spatial growth pattern?

Hoyt's Sector Model, where land-use zones extend outward along transport routes in sectorial wedges.

Burgess's Concentric Zone Model, driven by high rural agricultural wages acting as a push factor into the outer commuter zone.

Linear Settlement Model, formed primarily when nucleated rural villages merge due to high urban dependency ratios.

Harris and Ullman's Multiple Nuclei Model, where working-age populations are inverted to form single-nucleus industrial belts.

Show answer & explanation

Answer: Hoyt's Sector Model, where land-use zones extend outward along transport routes in sectorial wedges.

Answer

Hoyt's Sector Model, which explains urban expansion in wedge-shaped zones along transportation corridors.

Hoyt's Sector Model specifically accounts for city expansion along major transportation corridors like rail lines and highways. As cities grow, activities expand outward in wedge-shaped sectors radiating from the Central Business District along these transit axes.

Step-by-Step Solution

Analyze the observed urban spatial pattern described in the stem.

Identified that land uses (low-income housing and industry) extend outward along major transportation arteries (railways and highways) in wedge shapes.

Understanding the physical layout and axis of growth is key to matching the correct urban land-use theory.

Compare the observed pattern against classical urban land-use models.

Homer Hoyt (1939) developed the Sector Model, which modifies Burgess's concentric circle theory by demonstrating that high-rent and industrial zones grow along radial transit routes.

Burgess proposed concentric rings, whereas Harris and Ullman proposed multiple independent nuclei. Hoyt specifically emphasized transport axes.

Key Concept

Hoyt's Sector Model of Urban Land Use

Estimated Time:1m 0s

Question 6167Question →

The draft Trading Account of Kalu Enterprises showed the following balances at year-end:

- Opening Inventory: ₦40,000
- Purchases: ₦250,000
- Carriage Inwards: ₦10,000
- Sales: ₦400,000
- Closing Inventory: ₦45,000

It was later discovered that goods costing ₦15,000 withdrawn by the owner for personal use had been incorrectly credited to the Sales Account at their selling price of ₦20,000. What is the corrected gross profit for the year?

₦140,000

₦145,000

₦160,000

₦110,000

Show answer & explanation

Answer: ₦140,000

Answer

₦140,000

To determine the corrected gross profit, two rectifications are required. First, the selling price of ₦20,000 must be deducted from Sales, resulting in corrected Sales of ₦380,000. Second, the cost price of ₦15,000 must be deducted from Purchases, resulting in corrected Purchases of ₦235,000. Adding Opening Inventory (₦40,000) and Carriage Inwards (₦10,000) to corrected Purchases (₦235,000) and subtracting Closing Inventory (₦45,000) gives a Cost of Goods Sold of ₦240,000. Subtracting ₦240,000 from ₦380,000 yields the correct gross profit of ₦140,000.

Step-by-Step Solution

Adjust Sales to eliminate the incorrect entry

Corrected Sales = ₦400,000 - ₦20,000 = ₦380,000

Goods taken for personal use do not constitute business sales and must be removed from the Sales Account.

Adjust Purchases for goods withdrawn at cost price

Corrected Purchases = ₦250,000 - ₦15,000 = ₦235,000

Goods withdrawn by the owner must be recorded at cost price by reducing Purchases.

Compute the Cost of Goods Sold (COGS)

COGS = Opening Inventory (₦40,000) + Carriage Inwards (₦10,000) + Corrected Purchases (₦235,000) - Closing Inventory (₦45,000) = ₦240,000

Cost of Goods Sold includes carriage inwards and reflects net purchases.

Calculate corrected Gross Profit

Gross Profit = ₦380,000 - ₦240,000 = ₦140,000

Gross profit is calculated as Corrected Sales minus Cost of Goods Sold.

Key Concept

Accounting treatment for goods withdrawn by owner misclassified as sales

Estimated Time:2m 0s

Question 6168Question →

Arrange the following sequential stages in the integrated manufacturing of structural steel at the Ajaokuta Iron and Steel Complex in Nigeria, starting from raw material preparation to the output of finished industrial goods.

Drag items to arrange them in the correct order

Show answer & explanation

Answer

The correct operational sequence begins with the beneficiation of raw iron ore at Itakpe, followed by sinter and coke blend preparation, blast furnace reduction to produce molten pig iron, converter decarburization to refine liquid steel, and finally continuous casting and hot rolling into structural steel products.

The manufacturing process of integrated steel production at Ajaokuta follows a strict chemical and physical progression: Upstream raw material upgrading (iron ore beneficiation at Itakpe) -> Feed agglomeration and fuel preparation (sintering and coke baking) -> Primary chemical reduction (blast furnace smelting of pig iron) -> Secondary metallurgical refining (decarburization in the basic oxygen converter) -> Physical shaping (continuous casting and hot-rolling into finished structural sections).

Step-by-Step Solution

Identify the primary raw material extraction and concentration phase.

Raw iron ore from Itakpe requires beneficiation first to achieve the required purity for blast furnace smelting.

Unrefined ore contains silica gangue that reduces furnace thermal efficiency if not removed upstream.

Determine the burden preparation process.

Concentrated ore is sintered and paired with metallurgical coke derived from coking coal.

Blast furnaces require porous sinter and strong coke to allow gas permeability and thermal reduction.

Sequence the primary smelting operation.

The burden is fed into the blast furnace to yield molten pig iron.

Blast furnace reduction converts iron oxides into high-carbon liquid iron.

Identify the steel refining stage.

Molten pig iron is transferred to the basic oxygen furnace for decarburization.

Pig iron is too brittle for structural use due to high carbon content (

>4\%

), requiring oxygen blowing to reduce carbon levels to steel specifications.

Establish the final milling and forming stage.

Refined liquid steel is cast into billets and rolled into merchant bars and wire rods.

Mechanical deformation in rolling mills imparts final structural strength and dimensions to the commercial steel products.

Key Concept

Sequential processing stages of integrated heavy industry in Nigeria (Ajaokuta Steel Complex)

Estimated Time:2m 0s

Question 6169Question →

A geographic survey of a rapidly expanding metropolitan area shows that manufacturing industries and low-income informal settlements have developed outward in linear wedges along major railway lines and highways radiating from the city center. Which urban land-use model best accounts for this wedge-shaped growth along transportation arteries, and what primarily drives low-income populations to occupy these specific corridors?

Hoyt's Sector Model, because low-income residents seek affordable land and proximity to industrial employment along transport routes despite environmental disamenities.

Burgess's Concentric Zone Model, because rural pull factors draw incoming low-income migrants directly to pristine outer agricultural belts along transport corridors.

Christaller's Central Place Theory, because linear settlement patterns along transport lines naturally convert into nucleated agricultural service hubs.

Harris and Ullman's Multiple Nuclei Model, because an inverted dependency ratio forces the working-class population to finance suburban residential developments along peripheral transit lines.

Show answer & explanation

Answer: Hoyt's Sector Model, because low-income residents seek affordable land and proximity to industrial employment along transport routes despite environmental disamenities.

Answer

Hoyt's Sector Model, because low-income residents seek affordable land and proximity to industrial employment along transport routes despite environmental disamenities.

The correct option identifies Hoyt's Sector Model, which explains how cities grow in wedge-shaped sectors along major transportation routes such as rail lines and arterial roads. Low-income workers often concentrate in sectors adjacent to industrial zones along these routes due to cheaper land and proximity to factory employment.

Step-by-Step Solution

Analyze the spatial growth pattern described in the scenario.

The growth is characterized by wedge-shaped sectors expanding outward from the city center along railway lines and highways.

Identifying the spatial structure (linear/wedge-shaped along transit corridors vs. concentric rings or multi-nodal clusters) isolates the applicable urban land-use theory.

Match the observed spatial structure to classic urban land-use models.

Homer Hoyt's Sector Model (1939) specifically describes land-use zones expanding along transport routes in radial sectors rather than uniform concentric rings.

Transport routes lower accessibility costs for industries, causing industrial and low-income residential sectors to align along these arteries.

Evaluate the socio-economic driver for low-income settlement location along transport axes.

Low-income populations settle near industrial corridors because land values are lower due to industrial noise/pollution, and proximity to transportation offers critical job accessibility.

Economic marginalization forces low-income residents to trade off environmental quality for affordability and job proximity.

Key Concept

Hoyt's Sector Model and Urban Land-Use Dynamics

Estimated Time:2m 0s

Question 6170Question →

Ade and Femi are partners in a business sharing profits and losses in the ratio $3:2$ . The partnership agreement specifies that the firm maintains fixed capital accounts. On 1st January 2025, Ade's capital account balance was $\text{₦}1,200,000$ and his current account had a credit balance of $\text{₦}150,000$ .

During the year ended 31st December 2025, the following transactions occurred:
- Interest on capital is allowed at $5\%$ per annum on opening capital balances.
- Ade is entitled to an annual partner salary of $\text{₦}200,000$ .
- Ade made total drawings of $\text{₦}180,000$ during the year.
- Interest charged on Ade's drawings was $\text{₦}10,000$ .
- The net profit available for distribution (divisible profit) was $\text{₦}750,000$ .

What is the balance on Ade's current account as at 31st December 2025?

₦670,000 credit

₦1,870,000 credit

₦1,050,000 credit

₦520,000 credit

Show answer & explanation

Answer: ₦670,000 credit

Answer

₦670,000 credit

Under the fixed capital account system, fixed capital accounts remain unaltered while routine transactions (interest on capital, salaries, share of profit, drawings, and interest on drawings) pass through the current account. Crediting the opening balance (₦150,000), interest on capital (₦60,000), salary (₦200,000), and profit share (₦450,000) gives total credits of ₦860,000. Subtracting the debits for drawings (₦180,000) and interest on drawings (₦10,000) leaves a closing credit balance of ₦670,000.

Step-by-Step Solution

Calculate Ade's entitlements credited to his Current Account

Interest on Capital:

5\% \times \text{₦}1,200,000 = \text{₦}60,000

; Salary:

\text{₦}200,000

; Profit Share:

\frac{3}{5} \times \text{₦}750,000 = \text{₦}450,000

Under the fixed capital account system, partner appropriations such as salary, interest on capital, and share of profit are credited to the partner's current account.

Sum total credit items in Ade's Current Account

Opening Balance (Credit) + Interest on Capital + Salary + Share of Profit =

\text{₦}150,000 + \text{₦}60,000 + \text{₦}200,000 + \text{₦}450,000 = \text{₦}860,000

All additions to a partner's current account increase the credit side of the account.

Calculate total debit items in Ade's Current Account

Drawings + Interest on Drawings =

\text{₦}180,000 + \text{₦}10,000 = \text{₦}190,000

Drawings and interest on drawings reduce the partner's equity in the business and are debited to the current account.

Determine the net ending balance of the Current Account

Total Credits - Total Debits =

\text{₦}860,000 - \text{₦}190,000 = \text{₦}670,000\text{ credit}

Subtracting total debits from total credits yields the net credit balance at year-end.

Key Concept

Fixed Capital Account System in Partnership Accounting

Estimated Time:2m 0s

Question 6171Question →

A trader settled a debt of $\text{₦}150,000$ owed to a supplier after receiving a trade discount of $10\%$ and a cash discount of $5\%$ for prompt payment by cheque. What amount will be entered in the bank column on the credit side of the trader's three-column cash book?

\text{₦}128,250

\text{₦}127,500

\text{₦}135,000

\text{₦}142,500

Show answer & explanation

Answer: $\text{₦}128,250$

Answer

The amount entered in the bank column on the credit side is

\text{₦}128,250

Trade discounts are deducted prior to accounting entry and do not appear in the cash book. The net invoice price is

\text{₦}135,000

. The

5\%

cash discount earned is calculated on

\text{₦}135,000

, which gives

\text{₦}6,750

. The actual cheque paid and entered in the bank column on the credit side is

\text{₦}135,000 - \text{₦}6,750 = \text{₦}128,250

Step-by-Step Solution

Calculate the net invoice price after deducting trade discount.

Trade discount =

10\% \times \text{₦}150,000 = \text{₦}15,000

. Net invoice amount =

\text{₦}150,000 - \text{₦}15,000 = \text{₦}135,000

Trade discount is deducted immediately on the invoice and is not recorded in the cash book.

Calculate the cash discount on the net invoice price.

Cash discount =

5\% \times \text{₦}135,000 = \text{₦}6,750

Cash discount for prompt payment is calculated on the net amount billed.

Determine the net cash/cheque paid for entry in the bank column.

Net cheque payment =

\text{₦}135,000 - \text{₦}6,750 = \text{₦}128,250

The net amount paid by cheque is entered in the bank column, while

\text{₦}6,750

is entered in the discount received column.

Key Concept

Calculation and recording of cash discount versus trade discount in the three-column cash book.

Question 6172Question →

Which of the following natural resources found in West Africa is classified as a non-renewable resource?

Crude oil

Solar radiation

Hydroelectric energy

Wind power

Show answer & explanation

Answer: Crude oil

Answer

Crude oil is a non-renewable resource because it takes millions of years to form and cannot be naturally replenished within a human timeframe.

Crude oil is a non-renewable resource because its reserves are finite and take millions of years of geological processing to form, making human consumption far faster than natural replacement.

Step-by-Step Solution

Define non-renewable natural resources

Non-renewable resources exist in finite quantities and are depleted much faster than natural geological processes can replace them.

Understanding the fundamental definition distinguishes exhaustible resources from continuous energy sources.

Classify the given options based on rate of replenishment

Solar radiation, hydroelectric energy, and wind power are naturally replenished continuously, whereas crude oil deposits are finite fossil reserves.

Crude oil formation requires millions of years under high pressure and temperature, rendering its supply exhaustible.

Key Concept

Classification of Natural Resources into Renewable and Non-Renewable Types

Estimated Time:45s

Question 6173Question →

Match each international trade term on the left with its corresponding definition or example on the right.

Click a left item, then click its matching right item

Show answer & explanation

Answer

Visible Trade matches physical commodity exports/imports; Invisible Trade matches international service exchanges; Customs Union matches member free trade with a shared external tariff; Trade Embargo matches an official trade ban.

Visible trade represents physical merchandise transactions. Invisible trade represents cross-border service payments. A customs union combines internal free trade with a common tariff on external goods. A trade embargo completely restricts trading activities with a specific nation.

Step-by-Step Solution

Distinguish between tangible goods and services in trade.

Visible trade deals with physical merchandise like cocoa and crude oil, while invisible trade deals with services like banking and tourism.

Physical items can be visually inspected at ports (visible), whereas services are non-physical (invisible).

Identify regional trade integration structures and commercial restrictions.

A customs union establishes internal free trade with a common external tariff, while an embargo bans trade entirely.

Economic groupings aim to facilitate regional commerce under agreed tariff structures, whereas embargoes act as severe trade sanctions.

Key Concept

Fundamental Concepts and Policy Instruments of International Trade

Question 6174Question →

Kolawole Traders maintains control accounts for its ledgers. On 31st December 2025, the balance on the Sales Ledger Control Account before adjustments was $\text{N}185,000$ (debit). A contra entry of $\text{N}14,000$ is to be set off between a customer's account in the sales ledger and their creditor account in the purchases ledger. What is the revised balance of the Sales Ledger Control Account after posting this set-off?

\text{N}171,000

debit

\text{N}199,000

debit

\text{N}171,000

credit

\text{N}199,000

credit

Show answer & explanation

Answer: $\text{N}171,000$ debit

Answer

\text{N}171,000

debit

A contra entry (set-off) reduces both trade debtors and trade creditors. To record a set-off in the control accounts, the Sales Ledger Control Account is credited and the Purchases Ledger Control Account is debited. Deducting the

\text{N}14,000

credit set-off from the opening debit balance of

\text{N}185,000

results in a revised balance of

\text{N}171,000

debit.

Step-by-Step Solution

Determine the double entry rule for a contra entry between control accounts

Debit Purchases Ledger Control Account and Credit Sales Ledger Control Account by

\text{N}14,000

A set-off reduces total debtors and total creditors simultaneously. Therefore, the Sales Ledger Control Account must be credited.

Calculate the adjusted balance on the Sales Ledger Control Account

\text{N}185,000 \text{ (debit)} - \text{N}14,000 \text{ (credit)} = \text{N}171,000 \text{ (debit)}

Crediting a debit-balance account reduces the balance.

Key Concept

Accounting treatment of contra entries in control accounts

Estimated Time:1m 30s

Question 6175Question →

On a topographical map drawn to a scale of $1:50,000$ , a road ascends continuously from a contour elevation of $200\text{ m}$ to $450\text{ m}$ . If the distance along the road measured on the map is $5.0\text{ cm}$ , what is the average gradient of the road?

1\text{ in }10

1\text{ in }50

1\text{ in }100

1\text{ in }5.5

Show answer & explanation

Answer: $1\text{ in }10$

Answer

The average gradient of the road is

1\text{ in }10

To find the gradient, first compute the Vertical Interval (V.I.) as the difference between the two contour elevations:

450\text{ m} - 200\text{ m} = 250\text{ m}

. Next, determine the Horizontal Equivalent (H.E.) on the ground by converting the map distance using the scale:

5.0\text{ cm} \times 50,000 = 250,000\text{ cm} = 2,500\text{ m}

. Dividing the V.I. by the H.E. gives

\frac{250}{2,500} = \frac{1}{10}

, which expresses an average gradient of

1\text{ in }10

Step-by-Step Solution

Calculate the Vertical Interval (V.I.)

\text{V.I.} = 450\text{ m} - 200\text{ m} = 250\text{ m}

The Vertical Interval is the difference in height between the upper and lower contour elevations.

Calculate the Horizontal Equivalent (H.E.) in ground distance

\text{H.E.} = 5.0\text{ cm} \times 50,000 = 250,000\text{ cm} = 2,500\text{ m}

The map scale of

1:50,000

means

1\text{ cm}

on the map represents

50,000\text{ cm}

(

500\text{ m}

) on the ground.

Calculate the Gradient ratio

\text{Gradient} = \frac{\text{V.I.}}{\text{H.E.}} = \frac{250\text{ m}}{2,500\text{ m}} = \frac{1}{10} = 1\text{ in }10

Topographic gradient is defined as the ratio of Vertical Interval to Horizontal Equivalent expressed in the same unit.

Key Concept

Calculating Topographic Gradient from Contour Lines and Map Scale

Estimated Time:1m 30s

Question 6176Question →

Match each pedogenic process involved in soil profile formation on the left with its corresponding chemical characteristic and profile manifestation on the right.

Click a left item, then click its matching right item

Show answer & explanation

Answer

Podsolization matches with intense leaching producing an ash-grey silica-rich E horizon. Lateritization matches with silica removal yielding reddish iron and aluminum sesquioxide accumulation. Calcification matches with precipitation of calcium carbonate in subsoil under moisture deficit. Gleization matches with anaerobic reduction of ferric iron into a bluish-grey reduced horizon.

Each pedogenic process corresponds directly to its specific climatic, vegetation, and biochemical mechanism: podsolization forms ash-grey leached upper horizons under cool coniferous litter; lateritization concentrates red sesquioxides via tropical desilication; calcification precipitates calcium carbonates in semi-arid subsoils; and gleization reduces iron under anaerobic waterlogged conditions to give a bluish-grey horizon.

Step-by-Step Solution

Analyze Podsolization

Identified as typical of boreal coniferous forests producing acidic chelation and ash-grey eluvial horizons.

Acid mor humus mobilizes sesquioxides downwards, leaving quartz-rich E horizons.

Analyze Lateritization

Identified as humid tropical weathering characterized by desilication.

High temperatures and abundant moisture dissolve silica while leaving insoluble iron and aluminum oxides.

Analyze Calcification

Identified as arid/semi-arid pedogenesis where evapotranspiration exceeds rainfall.

Restricted leaching causes calcium carbonate accumulation in horizon B.

Analyze Gleization

Identified as hydromorphic pedogenesis in saturated soils.

Lack of oxygen drives microbial reduction of iron from ferric to bluish-grey ferrous state.

Key Concept

Pedogenic processes controlling soil profile development across global climatic zones.

Question 6177Question →

During the formation of a limited liability company, the promoters are required to prepare official documents for registration. Which document specifies the internal rules and regulations governing the duties of directors, voting rights of members, and the conduct of meetings?

Articles of Association

Memorandum of Association

Prospectus

Certificate of Incorporation

Show answer & explanation

Answer: Articles of Association

Answer

Articles of Association

The Articles of Association serve as the internal rulebook of a limited liability company, detailing internal administrative rules such as the appointment and powers of directors, rights of shareholders, and meeting procedures.

Step-by-Step Solution

Identify the purpose of company formation documents

Company registration requires constitutional documents that define both external relationships and internal operations.

Different legal documents serve distinct regulatory functions during incorporation.

Distinguish internal regulations from external constitutions and certificates

The document detailing internal administration, administrative powers of directors, calling of meetings, and internal governance is the Articles of Association.

The Memorandum of Association governs external scope and objects, whereas the Articles of Association regulate internal governance.

Key Concept

Articles of Association vs Memorandum of Association

Estimated Time:1m 0s

Question 6178Question →

Match each type of statistical map or graphical representation on the left with its most appropriate geographical application on the right.

Click a left item, then click its matching right item

Show answer & explanation

Answer

Choropleth map matches displaying population density using shaded administrative areas; Dot map matches showing absolute spatial distribution of population using point symbols; Flow map matches illustrating volume and direction of cargo or passenger movements; Pie chart matches showing percentage component breakdown of a total statistical value.

Each mapping technique is specifically designed for a particular data format: Choropleth maps represent area-based densities, Dot maps present absolute point distributions, Flow maps display movement volumes, and Pie charts represent percentage proportions of a total.

Step-by-Step Solution

Analyze Choropleth map characteristics

Matches displaying population density using shaded administrative areas

Choropleth maps use graded shading over administrative units to convey continuous density or ratio data.

Analyze Dot map characteristics

Matches showing absolute spatial distribution of population using point symbols

Dot maps represent raw numerical quantities distributed spatially using point symbols.

Analyze Flow map characteristics

Matches illustrating volume and direction of cargo or passenger movements

Flow diagrams display dynamic movements along paths with width scaled to quantity.

Analyze Pie chart characteristics

Matches showing percentage component breakdown of a total statistical value

Pie charts show proportional sub-divisions of 360 degrees corresponding to 100% of a dataset.

Key Concept

Selection and Functions of Statistical Maps and Diagrams

Question 6179Question →

Nigeria is located in West Africa and is defined by specific geographical coordinates. Which of the following correctly describes the latitudinal extent of Nigeria?

4^\circ\text{N}

14^\circ\text{N}

3^\circ\text{E}

15^\circ\text{E}

4^\circ\text{S}

14^\circ\text{S}

3^\circ\text{N}

15^\circ\text{N}

Show answer & explanation

Answer: $4^\circ\text{N}$ to $14^\circ\text{N}$

Answer

Nigeria extends between latitudes

4^\circ\text{N}

and

14^\circ\text{N}

Nigeria is located entirely in the Northern Hemisphere, spanning from latitude

4^\circ\text{N}

at its southern coastal boundary to

14^\circ\text{N}

at its northern boundary near Lake Chad.

Step-by-Step Solution

Identify the geographical coordinate system dimension requested.

The question asks for the latitudinal extent, which measures distance north or south of the Equator.

Distinguishing latitude (north-south) from longitude (east-west) is required to select the correct coordinates.

Recall the absolute boundary limits of Nigeria.

Nigeria lies between latitude

4^\circ\text{N}

at the Niger Delta coast and latitude

14^\circ\text{N}

near Lake Chad in the north.

These coordinates define the northern and southern limits of the country.

Key Concept

Latitudinal Extent of Nigeria

Estimated Time:45s

Question 6180Question →

Complete the following statement regarding ledger account classification and double-entry principles by providing the correct type of ledger account for each blank.

Fill in the blanks below

When office furniture is purchased on credit from Woodworks Ltd, the furniture account is classified as a account, whereas the supplier's account, Woodworks Ltd, is classified as a account.

Show answer & explanation

Answer

The furniture account is a real account, and the Woodworks Ltd account is a personal account.

Office furniture represents a tangible property/asset of the business, making it a real account. Woodworks Ltd is a corporate entity (creditor), making its ledger account a personal account.

Step-by-Step Solution

Identify the nature of the furniture account.

Furniture is a tangible asset owned by the business, which falls under real accounts.

Real accounts deal with physical assets and property of the enterprise.

Identify the nature of the Woodworks Ltd account.

Woodworks Ltd is a trade creditor (an entity/person to whom money is owed), which falls under personal accounts.

Personal accounts deal with individual persons, firms, or corporate entities.

Key Concept

Ledger Classification and Double Entry Rules

Estimated Time:1m 0s

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