JAMB Economics 1983 past questions and answers

47 questions. Try each one, then open the answer to check yourself and read the explanation.

Question 1

National Income

Which of the following items is NOT included in measuring national income by the income approach?

  1. A.Wages and salaries of public servants
  2. B.Student grants and scholarships
  3. C.Profits of companies
  4. D.Income earned by self employed persons such as lawyers
  5. E.Rents on property.
Show the answer and explanation

Answer: B (Student grants and scholarships)

Explanation

Grants and scholarships are transfer payments: nothing is produced in return, so they are left out of national income.

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Question 2

Price Determination

A downward sloping demand curve intersects a fixed supply curve. A shift of this demand curve to the right implies that

  1. A.both price and quantity will increase
  2. B.only price increases
  3. C.only quantity increases
  4. D.the price remains constant
  5. E.the price falls.
Show the answer and explanation

Answer: B (only price increases)

Explanation

A fixed supply curve is vertical: the quantity cannot change. When demand shifts to the right, the new equilibrium is higher up the same vertical line, so only the price increases.

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Question 3

Industrialisation

Which of the following items is NOT an argument for locating industries in rural areas?

  1. A.Rural areas supply agricultural raw material
  2. B.The pace of development will be quickened in rural areas
  3. C.Employment will be provided for rural inhabitants
  4. D.Capital is easily available in rural areas
  5. E.Suitable humid climate is sometimes found in rural areas.
Show the answer and explanation

Answer: D (Capital is easily available in rural areas)

Explanation

Capital is scarce in rural areas, so it cannot be a reason to site industries there; the other options are real attractions of rural locations.

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Question 5

Population

The natural growth rate of a population is the

  1. A.sum of the birth rate and the death rate
  2. B.sum of the birth rate and the net migration rate
  3. C.birth rate minus the death rate
  4. D.birth rate divided by the net migration
  5. E.death rate minus the net migration.
Show the answer and explanation

Answer: C (birth rate minus the death rate)

Explanation

Natural growth ignores migration: it is simply the birth rate minus the death rate.

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Question 6

Theory of Production

Which of the following sets fully represents factors of production?

  1. A.Sunlight, machinery, man, land
  2. B.Land, labour, capital, enterprise, technology
  3. C.Capital, technology, ideas, market, land
  4. D.Land, water, weather
  5. E.Money, market, middlemen.
Show the answer and explanation

Answer: B (Land, labour, capital, enterprise, technology)

Explanation

Of the sets given, only B lists land, labour, capital and enterprise (the four factors), together with technology.

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Question 7

Basic Concepts

Production possibilities (alternatives)
Alternative: P | Q | R | S | T
Units of shelter: 5 | 4 | 3 | 2 | 0
Units of food: 0 | 5 | 9 | 12 | 15
Based on the above production possibilities table, the real cost of a unit of food when alternative R is selected is

  1. A.one unit of shelter
  2. B.three units of shelter
  3. C.one third of a unit of shelter
  4. D.six units of shelter
  5. E.two units of shelter.
Show the answer and explanation

Answer: C (one third of a unit of shelter)

Explanation

Going from R to S, one unit of shelter is given up to get 3 more units of food (9 to 12), so each unit of food costs one third of a unit of shelter.

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Question 8

Basic Concepts

The concept of economic efficiency primarily refers to

  1. A.obtaining the maximum output from available resources at the lowest possible cost
  2. B.conservation of our petroleum resources
  3. C.equity in the distribution of the nation's wealth
  4. D.producing without waste
  5. E.the limited wants-unlimited resources dilemma.
Show the answer and explanation

Answer: A (obtaining the maximum output from available resources at the lowest possible cost)

Explanation

Economic efficiency means getting the greatest output from the resources available at the least cost.

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Question 9

Theory of Production

If successive units of labour are added to a piece of land while capital and technology remain constant, a point will be reached in the level of production when each added unit of labour will add less to the output than previous units of labour. This concept is known as

  1. A.the productivity of labour
  2. B.the law of diminishing marginal utility
  3. C.the law of diminishing returns
  4. D.the concept of factor intensity
  5. E.labour intensive production.
Show the answer and explanation

Answer: C (the law of diminishing returns)

Explanation

When more of a variable factor is added to fixed factors, its marginal product eventually falls: the law of diminishing returns.

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Question 10

Market Structures

In perfect competition a firm's price is equal to its marginal revenue which is again equal to average revenue. This form maximizes its profits when its marginal cost (MC) is equal to price (P). Which of the curves in the diagram below represents the firm's marginal cost (MC)?

Diagram for this question
  1. A.Curve I
  2. B.Curve II
  3. C.Curve III
  4. D.Curve IV
  5. E.Curves I and III.
Show the answer and explanation

Answer: D (Curve IV)

Explanation

Curve I is the horizontal price line (P = MR = AR) and the U-shaped curve is average cost; the steeply rising curve IV that cuts through them is marginal cost.

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Question 11

Theory of Demand

A Nigerian household's demand curve for semovita is downward sloping because

  1. A.the demand for semovita is high
  2. B.the local markets are flooded with semovita
  3. C.it is produced in Nigeria
  4. D.every household can afford to buy semovita
  5. E.higher prices attract lower quantities while lower prices attract larger quantities.
Show the answer and explanation

Answer: E (higher prices attract lower quantities while lower prices attract larger quantities.)

Explanation

A demand curve slopes downward because people buy less at higher prices and more at lower prices (the law of demand).

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Question 12

Price Determination

The table below shows the market schedule for semovita.
Price per 5kg bag | Quantity demanded in bags | Quantity supplied in bags
N3.00 | 15,000 | 1,500
N4.00 | 13,000 | 3,000
N5.00 | 10,000 | 6,000
N6.00 | 7,000 | 7,000
N7.00 | 5,000 | 9,000
N8.00 | 4,000 | 12,000
N9.00 | 2,000 | 14,000
What is the market equilibrium price?

  1. A.N5.00
  2. B.N8.00
  3. C.N9.00
  4. D.N7.00
  5. E.N6.00
Show the answer and explanation

Answer: E (N6.00)

Explanation

Equilibrium is where quantity demanded equals quantity supplied: at N6.00 both are 7,000 bags.

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Question 13

Theory of Costs and Revenue

Marginal cost curve intersects average cost curve

  1. A.from above at its lowest point
  2. B.from below before the lowest point
  3. C.from below at its lowest point
  4. D.from below after the lowest point
  5. E.at zero point.
Show the answer and explanation

Answer: C (from below at its lowest point)

Explanation

While MC is below AC it pulls AC down; once MC rises above AC it pulls AC up. So MC cuts AC from below at AC's lowest point.

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Question 14

Industrialisation

Palm oil industry is located in Bendel State because the State

  1. A.imports raw material for palm oil industry
  2. B.is a palm tree growing area
  3. C.soil is unsuitable for other crops
  4. D.government does not engage land for other crops
  5. E.land is suitable for oil.
Show the answer and explanation

Answer: B (is a palm tree growing area)

Explanation

Processing industries locate near their raw material; Bendel (now Edo/Delta) is an oil-palm growing area.

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Question 15

Money and Inflation

The meaning of 'wage-price spiral' is

  1. A.demand pull and cost push inflation pulling each other in different directions
  2. B.demand pull and cost push inflation intensifying each other
  3. C.both of them bringing about a reduction in the price level
  4. D.that demand pull and cost push inflation increases employment
  5. E.that wages and prices are rising at a proportional rate.
Show the answer and explanation

Answer: B (demand pull and cost push inflation intensifying each other)

Explanation

Rising prices lead workers to demand higher wages, which raise costs and prices again: demand-pull and cost-push inflation feed each other.

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Question 16

Money and Inflation

In an inflationary period which of the following statements is NOT true?

  1. A.Wages rise simultaneously with prices
  2. B.The purchasing power of money diminishes
  3. C.More money runs after a limited quantity of goods
  4. D.Money supply increases
  5. E.Aggregate real demand exceeds aggregate real supply.
Show the answer and explanation

Answer: A (Wages rise simultaneously with prices)

Explanation

In inflation wages usually lag behind prices, which is why wage earners lose; the other statements describe inflation correctly.

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Question 17

Distributive Trade

Retailers in an economy perform the function of

  1. A.production
  2. B.exchange
  3. C.distribution
  4. D.hoarding
  5. E.investment.
Show the answer and explanation

Answer: C (distribution)

Explanation

Retailers are the last link in the chain of distribution, bringing goods to final consumers.

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Question 18

Business Organisations

In a sole proprietorship, the decisions are made by the

  1. A.government
  2. B.board of directors
  3. C.management
  4. D.shareholders' conference
  5. E.owner.
Show the answer and explanation

Answer: E (owner.)

Explanation

A sole proprietor owns and runs the business alone, so he or she makes all the decisions.

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Question 19

Business Organisations

Which of the following enterprises does NOT pursue the sole objective of profit maximization?

  1. A.Roads Nigeria Ltd.
  2. B.Union Bank of Nigeria Ltd.
  3. C.Nigerian Electric Power Authority
  4. D.Volkswagen (VW) Nigeria Ltd.
  5. E.Kingsway Nigeria Ltd.
Show the answer and explanation

Answer: C (Nigerian Electric Power Authority)

Explanation

NEPA was a public corporation whose main aim was to provide electricity as a service to the public, not to maximise profit.

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Question 21

Public Finance

The maintenance of general economic stability in the country necessarily relies heavily on

  1. A.federal fiscal policy
  2. B.coordinated federal, state and local fiscal policies
  3. C.tax and revenue policies of state governments
  4. D.federal grants to state and local governments
  5. E.federal grants to local governments.
Show the answer and explanation

Answer: B (coordinated federal, state and local fiscal policies)

Explanation

All three tiers of government tax and spend, so stability needs their fiscal policies to work together.

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Question 22

Financial Institutions

The supply of loanable funds is significantly influenced by

  1. A.commercial banks
  2. B.mortgage banks
  3. C.financial intermediaries
  4. D.the Central Bank
  5. E.insurance companies.
Show the answer and explanation

Answer: D (the Central Bank)

Explanation

The Central Bank controls the money supply and the lending capacity of all banks, so it has the biggest influence on loanable funds.

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Question 23

Public Finance

Which of the following are direct taxes?

  1. A.Sales taxes
  2. B.Excise duties
  3. C.Income and company taxes
  4. D.Tariff duties
  5. E.Commodity taxes.
Show the answer and explanation

Answer: C (Income and company taxes)

Explanation

Direct taxes are paid straight to government by the person or firm on whom they fall, like income and company taxes; the others are taxes on goods.

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Question 24

Theory of Production

Division of labour has many advantages. Notwithstanding, it is greatly limited by

  1. A.monotony of work
  2. B.decline of craftmanship
  3. C.risk of unemployment
  4. D.extent of market demand
  5. E.boredom.
Show the answer and explanation

Answer: D (extent of market demand)

Explanation

Specialisation pays only if the large output can be sold, so the size of the market limits division of labour; the others are disadvantages, not limits.

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Question 25

Elasticity

In the above diagram, P1S is a supply curve for a manufactured good. It shows that

Diagram for this question
  1. A.when price is OP1, quantity is infinitely elastic
  2. B.the higher the price the greater the quantity supplied
  3. C.the higher the price the lower the quantity supplied
  4. D.when price is zero quantity supplied becomes infinite
  5. E.when price is infinite quantity supplied becomes zero.
Show the answer and explanation

Answer: A (when price is OP1, quantity is infinitely elastic)

Explanation

A horizontal supply curve is perfectly (infinitely) elastic: any quantity is supplied at price OP1, but none below it.

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Question 26

Business Organisations

In the event of a limited liability company going into liquidation each

  1. A.shareholder may lose the maximum of the amount he has invested
  2. B.shareholder loses nothing
  3. C.shareholder loses everything including his house
  4. D.shareholder's liability becomes unlimited
  5. E.shareholder will lose the amount he has invested plus a proportion of his bank account.
Show the answer and explanation

Answer: A (shareholder may lose the maximum of the amount he has invested)

Explanation

Limited liability means a shareholder can lose at most the money put into the shares; private property is safe.

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Question 27

Public Finance

A greater burden of the taxes on essential goods is borne by the

  1. A.middle income group
  2. B.higher income group
  3. C.lower income group
  4. D.people falling between the middle and higher income groups
  5. E.top few richest people of the country.
Show the answer and explanation

Answer: C (lower income group)

Explanation

Poor people spend a larger share of their income on essentials, so such taxes take a bigger share of their income (they are regressive).

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Question 28

International Trade

Comparative cost doctrine of international trade means specialization in production

  1. A.according to absolute cost advantage
  2. B.according to absolute cost disadvantage
  3. C.according to comparative cost disadvantage
  4. D.according to comparative cost advantage
  5. E.on the basis of the availability of labour.
Show the answer and explanation

Answer: D (according to comparative cost advantage)

Explanation

The law of comparative cost says each country should specialise in the goods it produces at a lower opportunity cost than others.

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Question 29

International Trade

The meaning of 'Dumping' is selling goods in a foreign market

  1. A.at a price below that received in the home market
  2. B.at a price higher than that received in the home market
  3. C.at a price equal to the costs price in the home market
  4. D.in order to encourage indigenous producers
  5. E.at a price equal to the selling price in the home market.
Show the answer and explanation

Answer: A (at a price below that received in the home market)

Explanation

Dumping is selling exports abroad more cheaply than at home (or below cost), often to capture the foreign market.

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Question 30

Balance of Payments and Exchange Rates

Disequilibrium in the balance of payments means

  1. A.imports of the country exceeding its exports
  2. B.overall deficit or surplus in the current account and capital account of the balance of payments
  3. C.capital flowing out of the country exceeds the capital flowing into the country
  4. D.deficit in the trade balance
  5. E.export earnings exceed cost of imports.
Show the answer and explanation

Answer: B (overall deficit or surplus in the current account and capital account of the balance of payments)

Explanation

Disequilibrium is any overall imbalance, deficit or surplus, when current and capital accounts are taken together.

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Question 31

Natural Resources and Petroleum

Petroleum 'glut' in international trade means

  1. A.a fall in petroleum production
  2. B.an over supply of petroleum
  3. C.a higher petroleum price offered by the buyer
  4. D.a higher petroleum price demanded by the seller
  5. E.higher prices for the consumption of petroleum.
Show the answer and explanation

Answer: B (an over supply of petroleum)

Explanation

A glut is a situation where supply is far greater than demand, as happened to oil in the early 1980s, pushing prices down.

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Question 32

International Trade

International trade is necessary because

  1. A.no country can live in economic isolation
  2. B.different countries are differently endowed in natural and man-made resources
  3. C.some countries have comparative costs advantage in the production of particular commodities over other countries
  4. D.the world demand for and supply of various categories of commodities is expanding very fast.
  5. E.countries want to build up their foreign exchange reserves.
Show the answer and explanation

Answer: B (different countries are differently endowed in natural and man-made resources)

Explanation

Countries have different natural and man-made resources, so none can produce everything it needs cheaply; this unequal endowment is the root reason for trade.

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Question 33

Economic Growth and Development

Mono product economies are those that

  1. A.have a rich cultural heritage
  2. B.produce only raw materials
  3. C.live from the export of their raw products
  4. D.produce one main commodity
  5. E.specialize in agricultural industries.
Show the answer and explanation

Answer: D (produce one main commodity)

Explanation

A mono-product economy depends on one main commodity, as Nigeria depends on crude oil.

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Question 34

International Economic Organisations

The quickest way of achieving an economic union on regional basis is to remove all

  1. A.currency barriers
  2. B.language barriers
  3. C.political barriers
  4. D.customs barriers
  5. E.legal barriers.
Show the answer and explanation

Answer: D (customs barriers)

Explanation

Removing customs duties and other trade barriers between members lets goods move freely at once; this is the first step towards economic union.

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Question 35

Economic Growth and Development

If an economy is growing at an annual rate of 7% and 4% of it is known to be due to the improvements in labour and capital combined, the balance of 3% is usually due to

  1. A.land and related factors
  2. B.abundance of natural resources
  3. C.level of human capital
  4. D.technical progress or other factors
  5. E.the discipline of political leadership.
Show the answer and explanation

Answer: D (technical progress or other factors)

Explanation

Growth not explained by more labour and capital is put down to technical progress and other factors (better methods, organisation, skills).

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Question 37

Business Organisations

When a government owns enterprises, a number of advantages arise. Which of the following is NOT one of such advantages?

  1. A.More capital is provided
  2. B.Pricing policy may be in the interest of consumers
  3. C.Government workers may be indifferent towards the public
  4. D.Infrastructures are rapidly developed
  5. E.Income may be more evenly distributed.
Show the answer and explanation

Answer: C (Government workers may be indifferent towards the public)

Explanation

Workers being indifferent to the public is a weakness of public enterprises, not an advantage.

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Question 38

Industrialisation

Which of the following is NOT an advantage of localization of industries?

  1. A.Reaping of external economies
  2. B.Development of a pool of skilled labour for the industry
  3. C.Development of subsidiary industries
  4. D.Development of organized markets
  5. E.Growth of conurbations.
Show the answer and explanation

Answer: E (Growth of conurbations.)

Explanation

Conurbations (overcrowded, merged towns) bring congestion, slums and pollution, so they are a disadvantage of localization.

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Question 39

Money and Inflation

The monetary system that requires double co-incidence of wants is known as

  1. A.the gold standard
  2. B.barter
  3. C.the commodity system
  4. D.the gold exchange standard
  5. E.the cheque system.
Show the answer and explanation

Answer: B (barter)

Explanation

In barter, goods are exchanged directly, so each trader must want what the other has: a double coincidence of wants.

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Question 40

Population

The effect of emigration on a country's population, all other things remaining equal, is to

  1. A.increase its size
  2. B.cause overpopulation
  3. C.increase its growth rate
  4. D.reduce the proportion of children
  5. E.reduce its size.
Show the answer and explanation

Answer: E (reduce its size.)

Explanation

Emigrants leave the country, so with other things unchanged the population falls.

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Question 41

Money and Inflation

Money performs a number of functions. ONE of these functions makes it possible for any person to provide for old age. Because of that particular function money is regarded as a

  1. A.medium of exchange
  2. B.measure of value
  3. C.unit of account
  4. D.store of value
  5. E.standard for deferred payments.
Show the answer and explanation

Answer: D (store of value)

Explanation

Money can be saved and used later, so as a store of value it lets people provide for old age.

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Question 42

Agriculture

Agriculture plays a dominant role in West African economies because

  1. A.the Green Revolution in Nigeria is agricultural
  2. B.it supplies all the foodstuff consumed in West Africa
  3. C.there are large plantations of cocoa, groundnut and palm oil in West Africa
  4. D.it is the main source of revenue in Nigeria
  5. E.it employes more than 50% of the total labour force in West Africa.
Show the answer and explanation

Answer: E (it employes more than 50% of the total labour force in West Africa.)

Explanation

Agriculture is dominant because most of the labour force works in it; it does not supply all food, and oil, not farming, is Nigeria's main revenue source.

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Question 43

Basic Concepts

Which of the following defines Economics most comprehensively?

  1. A.Buying and selling
  2. B.Organization of industries
  3. C.Study of human behaviour in the allocation of scarce resources
  4. D.National development planning and budgeting
  5. E.Banking and Insurance.
Show the answer and explanation

Answer: C (Study of human behaviour in the allocation of scarce resources)

Explanation

Economics studies how people behave when allocating scarce resources among competing uses; the other options are only parts of it.

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Question 44

Population

Age-structure in Nigeria is such that the working age-group is in the years

  1. A.1-15
  2. B.15-65
  3. C.30-40
  4. D.40-65
  5. E.65 and above.
Show the answer and explanation

Answer: B (15-65)

Explanation

The working (active) population is usually taken as people aged about 15 to 65.

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Question 45

Market Structures

NEPA as a public corporation is

  1. A.a power-generating industry in Nigeria
  2. B.organized in a perfectly competitive market
  3. C.a duopoly
  4. D.a monopolistically competitive industry
  5. E.a monopoly.
Show the answer and explanation

Answer: E (a monopoly.)

Explanation

NEPA was the only supplier of public electricity in Nigeria, which made it a monopoly.

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Question 46

Labour Market

Full employment is a situation in which

  1. A.every adult is employed
  2. B.all adults who can work are employed
  3. C.all persons who have attained the age of 15 years and above are employed
  4. D.only the disabled are not employed
  5. E.all those who are able and eligible to work can find employment.
Show the answer and explanation

Answer: E (all those who are able and eligible to work can find employment.)

Explanation

Full employment means everyone who is able, willing and eligible to work can find a job; it does not mean every adult works.

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Question 47

Elasticity

When demand is elastic, it means that consumers

  1. A.react more proportionately to price change
  2. B.are not sensitive to price change
  3. C.will stop buying when price increases
  4. D.react less proportionately to price change
  5. E.react equally to price change.
Show the answer and explanation

Answer: A (react more proportionately to price change)

Explanation

Elastic demand means the percentage change in quantity demanded is greater than the percentage change in price.

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Question 48

Theory of Production

Demand for a factor of production is

  1. A.a composite demand
  2. B.a joint demand
  3. C.a derived demand
  4. D.an elasticity of demand
  5. E.cross-elasticity of demand.
Show the answer and explanation

Answer: C (a derived demand)

Explanation

Factors are wanted for the goods they help produce, so their demand is derived from the demand for those goods.

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Question 49

Market Structures

Differentiated product is the characteristic feature of

  1. A.perfect competition
  2. B.pure competition
  3. C.monopolistic competition
  4. D.monopoly
  5. E.oligopoly.
Show the answer and explanation

Answer: C (monopolistic competition)

Explanation

In monopolistic competition many firms sell similar but branded (differentiated) products.

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Question 50

Economic Growth and Development

Nigeria is currently implementing the

  1. A.third development plan
  2. B.second development plan
  3. C.fourth development plan
  4. D.fifth development plan
  5. E.first development plan.
Show the answer and explanation

Answer: C (fourth development plan)

Explanation

This 1983 paper fell within Nigeria's Fourth National Development Plan, 1981–1985.

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