All practice questions

A firm operating in the short run employs labor as a variable input while keeping capital fixed. When the firm employs $4$ workers, total output is $120$ units. When a $5$ th worker is added, total output increases to $145$ units. What is the marginal product of the $5$ th worker in units?

A textile manufacturing firm operating in Kano State increases all of its factor inputs by $50\%$ in order to expand its scale of production. Following this scale expansion, the firm's total weekly output of fabric rises from $20,000\text{ meters}$ to $35,000\text{ meters}$. What is the percentage increase in the firm's total output?

Despite the establishment of the Agricultural Credit Guarantee Scheme Fund (ACGSF) to absorb lending risks for commercial banks, smallholder agricultural producers in Nigeria continue to experience severe credit access constraints. Which of the following structural factors best explains why the ACGSF has not fully overcome the agricultural credit deficit for smallholder farmers?

In the pre-colonial Oyo political system, which institutional body exercised the supreme constitutional check of rejecting an oppressive Alaafin by presenting him with an empty calabash or parrot's eggs?

Match each type of sovereignty listed on the left with its corresponding definition or legal characteristic on the right.

Match each electoral term relating to franchise and suffrage on the left with its corresponding legal definition or characteristic on the right.

A democratic government enacts legislation that curtails the activities of minority political parties and opposition groups, justifying its action on the premise that the ruling party reflects the supreme will of the majority electorate. Which fundamental pillar of liberal democracy does this enactment directly violate?

In tomato plants (*Solanum lycopersicum*), purple stem ($P$) is dominant over green stem ($p$), and cut leaf ($C$) is dominant over potato leaf ($c$). A plant heterozygous for both traits ($PpCc$) is crossed with a homozygous recessive plant ($ppcc$). What proportion of the offspring is expected to have purple stems and potato leaves?

Match each fundamental economic concept relating to the concept and law of demand on the left with its corresponding definition on the right. Which of the following pairs correctly connects each concept with its appropriate economic definition?

Charging judicial salaries and allowances directly to the Consolidated Revenue Fund is a key constitutional mechanism designed to safeguard judicial independence from executive and legislative interference.

What is the primary motive guiding the economic activities and investment decisions of private enterprises in a capitalist system?

Arrange the following sequential biochemical events of the light-independent stage (Calvin cycle) of photosynthesis in the correct chronological order from beginning to end.

Complete the following statement comparing socio-economic relationships in feudal systems of government:

Following a general election, an aggrieved candidate seeks legal redress to nullify the declared return of a rival candidate based on widespread ballot box snatching and falsification of result sheets. Simultaneously, the police department files charges against several electoral officers for colluding in electoral fraud. Which judicial body possesses exclusive original jurisdiction to hear and determine the candidate's petition seeking to invalidate the election outcome?

The table below outlines a country's progressive personal income tax brackets:

If a taxpayer earns a total gross taxable income of $\text{N}500,000$ in a year, what is their effective (average) tax rate?

A field biologist examines a grass species growing in an open savanna and notices that its flowers lack petals and nectaries, but possess long filaments with exposed anthers and large, feathery stigmas. Which of the following best explains the structural adaptation of these feathery stigmas?

During periods of rapid inflation, individuals tend to spend money immediately rather than holding onto cash savings because purchasing power declines over time. Which function of money is directly impaired in this situation while its role in facilitating daily trade continues?

In tomato plants, the allele for red fruit ($R$) is completely dominant over the allele for yellow fruit ($r$). If a heterozygous red-fruited plant is self-pollinated and produces $400$ offspring in the $F_2$ generation, how many of these plants are expected to be heterozygous red-fruited?

What is the volume of chlorine gas produced at s.t.p., in $\text{dm}^3$, when $8.7\text{ g}$ of manganese(IV) oxide ($MnO_2$) reacts completely with excess concentrated hydrochloric acid ($HCl$)? [Molar volume of gas at s.t.p. = $22.4\text{ dm}^3\text{mol}^{-1}$, $Mn = 55$, $O = 16$]

Under the same conditions of temperature and pressure, $50\text{ cm}^3$ of sulfur(IV) oxide diffuses through a porous plug in $20\text{ seconds}$. How long will it take for an equal volume of methane gas ($CH_4$) to diffuse through the same plug under identical conditions? $[H = 1, C = 12, O = 16, S = 32]$