JAMB Economics 1979 past questions and answers

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

Question 1

Labour Market

Which of the following is not true of the occupational distribution of the labour force in West Africa?

  1. A.A large percentage of the labour force is engaged in agriculture
  2. B.Agriculture is the most important occupation in West Africa
  3. C.The manufacturing sector employs a large percentage of the population
  4. D.Agriculture does not constitute an important source of paid employment
  5. E.The public sector forms an important source of paid employment.
Show the answer and explanation

Answer: C (The manufacturing sector employs a large percentage of the population)

Explanation

In West Africa most workers are in farming; manufacturing employs only a small share of the population.

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Question 2

Population

Which of the following is not true of the theory of optimum population?

  1. A.It is possible for a densely populated country to be underpopulated if it has insufficient labour to make the most effective use of its other factors
  2. B.The quantity of labour, which combined with the other factors gives the minimum output, is known as optimum population
  3. C.The quantity of labour, which combined with the other factors, gives the maximum output, is known as optimum population
  4. D.The test of over-population is whether it exceeds the optimum
  5. E.It is possible for a thinly populated country to be over-populated if it has a poor supply of other factors.
Show the answer and explanation

Answer: B (The quantity of labour, which combined with the other factors gives the minimum output, is known as optimum population)

Explanation

Optimum population gives the maximum output per head, not the minimum, so statement B is false.

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Question 3

Theory of Production

Production covers all but one of the following activities:

  1. A.changing the position of a good in time as, for example, holding stocks of goods until they are required
  2. B.the provision of some kind of service, e.g. retailing
  3. C.changing the form of a good from the raw material to the finished product
  4. D.changing the situation of a good as, for example, from a factory in Lagos to a retail shop in Port Harcourt
  5. E.the use of goods and services to satisfy individual wants.
Show the answer and explanation

Answer: E (the use of goods and services to satisfy individual wants.)

Explanation

Using goods and services to satisfy wants is consumption, not production; storing, retailing, processing and transporting all add utility.

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Question 4

Theory of Demand

If two commodities are good substitutes for one another, e.g. butter and margarine, an increase in the demand for one will reduce the demand for the other. This type of demand is called

  1. A.composite demand
  2. B.elastic demand
  3. C.derived demand
  4. D.competitive demand
  5. E.inelastic demand.
Show the answer and explanation

Answer: D (competitive demand)

Explanation

Substitutes compete with each other for buyers, so their demand is called competitive (rival) demand.

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Question 5

Theory of Supply

One of the reasons why the conditions of supply of a commodity may change is

  1. A.a change in real income
  2. B.changes in the technique of production
  3. C.a change of fashion or taste
  4. D.changes in the price of the commodity itself
  5. E.changes in population.
Show the answer and explanation

Answer: B (changes in the technique of production)

Explanation

A new production technique changes costs and so shifts the supply curve; income, taste and population affect demand, and the good's own price only moves along the curve.

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Question 6

Theory of Demand

When the demand curve shifts to the right, it indicates that a larger quantity is demanded at each price. This is caused by one of the following:

  1. A.a fall in income
  2. B.a rise in the price of a complement
  3. C.a fall in the price of a substitute
  4. D.a change in tastes against this commodity
  5. E.none of the above.
Show the answer and explanation

Answer: E (none of the above.)

Explanation

Each of A to D would reduce demand (shift it to the left) for a normal good, so none of them causes a rightward shift.

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Question 7

Price Determination

When the price of a commodity is below the equilibrium price the quantity demanded will exceed the quantity supplied. Such a situation is referred to as

  1. A.elastic supply
  2. B.joint demand
  3. C.excess supply
  4. D.derived demand
  5. E.none of the above.
Show the answer and explanation

Answer: E (none of the above.)

Explanation

When demand exceeds supply the situation is excess demand (a shortage), which is not among options A to D.

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Question 8

Financial Institutions

The Central Bank controls the activities of other banks by all but one of the following. Which one?

  1. A.The use of bank rate
  2. B.The purchase or sale of government bonds on the open market
  3. C.Special deposit
  4. D.The use of directives
  5. E.Taxation.
Show the answer and explanation

Answer: E (Taxation.)

Explanation

Bank rate, open market operations, special deposits and directives are monetary tools; taxation is a fiscal tool of government.

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Question 9

Financial Institutions

Which of these alternatives is wrong? Central banks are

  1. A.bankers to the government
  2. B.bankers to commercial banks
  3. C.merchant banks
  4. D.controllers and regulators of the money supply
  5. E.issuers of bank notes.
Show the answer and explanation

Answer: C (merchant banks)

Explanation

A central bank serves the government and the banks and controls money; it is not a merchant bank.

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Question 10

International Trade

The principle of comparative advantage or comparative cost is not based on one of the following assumptions:

  1. A.there are restrictions in trade
  2. B.there are no costs of transportation
  3. C.there is perfect competition
  4. D.there are no tariffs or import and export quota
  5. E.there are only two countries and only two commodities entering into international trade.
Show the answer and explanation

Answer: A (there are restrictions in trade)

Explanation

The theory assumes free trade, so 'there are restrictions in trade' is not one of its assumptions.

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Question 11

Public Finance

Which of the following is not a direct tax?

  1. A.Company income tax
  2. B.Capital tax
  3. C.Purchase tax
  4. D.Personal income tax
  5. E.Capital gains tax.
Show the answer and explanation

Answer: C (Purchase tax)

Explanation

Purchase tax is charged on goods bought and can be passed on to buyers, so it is an indirect tax.

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Question 12

Theory of Production

Division of labour means

  1. A.dividing the labour into different categories
  2. B.splitting the process of production into different parts to be completed by each person
  3. C.dividing the goods and services into different sections
  4. D.assigning different duties to labourers
  5. E.group of labourers working in a factory or shop.
Show the answer and explanation

Answer: B (splitting the process of production into different parts to be completed by each person)

Explanation

Division of labour breaks production into separate stages, with each worker specialising in one stage.

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Question 13

Theory of Consumer Behaviour

By utility we mean

  1. A.usefulness
  2. B.power of satisfying a want
  3. C.beneficial
  4. D.advantageous
  5. E.consumable.
Show the answer and explanation

Answer: B (power of satisfying a want)

Explanation

In economics utility is the ability of a good or service to satisfy a want, whether or not it is 'useful'.

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Question 14

Public Finance

Which of the following is not an indirect tax?

  1. A.Excise duty
  2. B.Company tax
  3. C.Import duty
  4. D.Export duty
  5. E.Sales tax.
Show the answer and explanation

Answer: B (Company tax)

Explanation

Company tax is paid directly on company profits, so it is a direct tax; the others are taxes on goods.

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Question 15

Theory of Costs and Revenue

Average Cost is

  1. A.the total cost of production
  2. B.the extra cost of producing one additional unit of output
  3. C.the cost of producing a unit of output
  4. D.variable cost
  5. E.overhead cost.
Show the answer and explanation

Answer: C (the cost of producing a unit of output)

Explanation

Average cost is total cost divided by output, i.e. the cost per unit produced.

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Question 16

Basic Concepts

Opportunity Cost is the

  1. A.price of scarce goods
  2. B.resources required for making a commodity
  3. C.cost of luxury goods
  4. D.accrual of financial losses by chance
  5. E.alternative that is forgone in order to satisfy a want.
Show the answer and explanation

Answer: E (alternative that is forgone in order to satisfy a want.)

Explanation

Opportunity cost is the next best alternative given up when a choice is made.

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Question 17

Theory of Supply

The quantity supplied of a commodity increases when

  1. A.production increases
  2. B.demand increases
  3. C.price of the commodity increases
  4. D.population of the country increases
  5. E.more commodities are imported.
Show the answer and explanation

Answer: C (price of the commodity increases)

Explanation

By the law of supply, sellers offer more of a commodity when its price rises.

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Question 18

Theory of Demand

In the above diagram DoDo is the original demand curve. D1D1 is

Diagram for this question
  1. A.a fall in the demand curve
  2. B.a rise in the demand curve
  3. C.an extension in the demand curve
  4. D.a contraction in the demand curve
  5. E.none of these curves.
Show the answer and explanation

Answer: B (a rise in the demand curve)

Explanation

D1D1 lies to the right of the original curve, so more is demanded at every price: the whole demand curve has risen.

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Question 19

Population

The country will be over-populated when

  1. A.the birth rate is high
  2. B.the death rate is low
  3. C.the growth rate is high
  4. D.the population is increasing more than the resources of the country
  5. E.unemployment is high in the country.
Show the answer and explanation

Answer: D (the population is increasing more than the resources of the country)

Explanation

Over-population means the population is too large for the country's resources, so output per head falls.

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Question 20

Money and Inflation

The value of money is generally measured by reference to

  1. A.the interest rate charged on bank loans
  2. B.the general price level
  3. C.the size of a country's gold stock
  4. D.the level of economic development in a country
  5. E.the price of stocks and shares on the stock exchange.
Show the answer and explanation

Answer: B (the general price level)

Explanation

The value of money is what it can buy, so it moves opposite to the general price level.

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Question 21

Elasticity

If the quantity demanded of a commodity increases from 20 to 30 when there is an increase in price from N4 to N5, the elasticity of demand is

  1. A.0
  2. B.1
  3. C.2
  4. D.5
  5. E.10.
Show the answer and explanation

Answer: C (2)

Explanation

% change in quantity = 10/20 = 50%; % change in price = 1/4 = 25%; elasticity = 50 ÷ 25 = 2.

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Question 22

Balance of Payments and Exchange Rates

The total value of goods and services sold and bought by a country across its border during a given period, usually a year, is known as

  1. A.visible trade
  2. B.invisible trade
  3. C.balance of payments
  4. D.balance of trade
  5. E.terms of trade.
Show the answer and explanation

Answer: C (balance of payments)

Explanation

The balance of payments records all of a country's dealings in goods and services (and capital) with the rest of the world; the balance of trade covers goods only.

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Question 23

Business Organisations

Which of the following types of capital is not rewarded by means of dividends?

  1. A.Ordinary shares
  2. B.Preference shares
  3. C.Cumulative preference shares
  4. D.Participating preference shares
  5. E.Debentures.
Show the answer and explanation

Answer: E (Debentures.)

Explanation

Debenture holders are lenders and receive fixed interest, not dividends.

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Question 24

Distributive Trade

Which of the following is not usually the function of a wholesaler?

  1. A.Transport
  2. B.Storage
  3. C.Advertising
  4. D.After-sales service
  5. E.Branding.
Show the answer and explanation

Answer: D (After-sales service)

Explanation

Wholesalers buy in bulk, store, transport, advertise and often pack and brand goods. After-sales service is given to final buyers by retailers or manufacturers.

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Question 25

National Income

Net national income is

  1. A.gross national income minus depreciation
  2. B.gross domestic product plus net income from abroad
  3. C.nominal national income deflated by the price level
  4. D.gross national income divided by the total population
  5. E.gross national product plus subsidies minus indirect taxes.
Show the answer and explanation

Answer: A (gross national income minus depreciation)

Explanation

Net national income is gross national income less depreciation (capital consumption).

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Question 26

Public Finance

If Mr. A earns N2,000 a year while Mr. B earns N8,000 a year but Mr. A pays N200 per annum in tax while Mr. B pays N400, such a tax is

  1. A.progressive
  2. B.indirect
  3. C.regressive
  4. D.proportional
  5. E.none of the above.
Show the answer and explanation

Answer: C (regressive)

Explanation

Mr A pays 10% of his income but Mr B pays only 5%, so the lower earner pays a higher rate: the tax is regressive.

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Question 27

Financial Institutions

Which of the following is not an asset of a commercial bank?

  1. A.Cash
  2. B.Money at call
  3. C.Treasury bills
  4. D.Reserve funds
  5. E.Loans and overdrafts.
Show the answer and explanation

Answer: D (Reserve funds)

Explanation

Cash, money at call, Treasury bills and loans are things a bank owns. Reserve funds are profits kept back that belong to shareholders, so they are shown as liabilities.

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Question 28

Balance of Payments and Exchange Rates

The lowering of the exchange rate between a country's currency and other currencies is known as

  1. A.the foreign exchange rate
  2. B.deflation
  3. C.exchange control
  4. D.the law of comparative advantage
  5. E.none of the above.
Show the answer and explanation

Answer: E (none of the above.)

Explanation

Lowering the exchange value of a currency is called devaluation, which is not among options A to D.

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Question 29

Theory of Production

When the average physical product curve is rising, the marginal physical product is

  1. A.below it
  2. B.above it
  3. C.falling
  4. D.zero
  5. E.none of the above.
Show the answer and explanation

Answer: B (above it)

Explanation

An average rises only when the marginal value added is greater than it, so MP is above a rising AP.

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Question 30

Money and Inflation

The proportion of currency in the money supply

  1. A.is higher in developing countries than advanced countries
  2. B.is lower in developing countries than advanced countries
  3. C.is the same in both developing and advanced countries
  4. D.grows as the economy develops
  5. E.none of the above.
Show the answer and explanation

Answer: A (is higher in developing countries than advanced countries)

Explanation

Banking habits are weaker in developing countries, so cash makes up a bigger share of money supply there.

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Question 31

Public Finance

If a government is running a deficit, this means

  1. A.terms of trade are unfavourable
  2. B.more projects cannot be undertaken
  3. C.tax inflow is greater than expenditure
  4. D.aggregate demand is greater than aggregate supply
  5. E.tax inflow is less than expenditure.
Show the answer and explanation

Answer: E (tax inflow is less than expenditure.)

Explanation

A budget deficit means government spending is greater than its revenue from taxes.

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Question 32

Market Structures

Pure monopoly describes a market where

  1. A.there are many sellers and a few buyers
  2. B.goods are sold at different prices
  3. C.entry is not blocked, but no one cares to enter
  4. D.a few sellers and one buyer exist
  5. E.none of the above.
Show the answer and explanation

Answer: E (none of the above.)

Explanation

A pure monopoly has a single seller of a product with no close substitutes and entry blocked; none of A to D says this.

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Question 33

Financial Institutions

Which of the following assets of a commercial bank does not yield revenue?

  1. A.Money in the tills of the bank
  2. B.Money at call
  3. C.Treasury certificates
  4. D.Treasury bills
  5. E.Bills of exchange.
Show the answer and explanation

Answer: A (Money in the tills of the bank)

Explanation

Cash kept in the tills earns no interest; the other assets are loans or securities that pay interest.

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Question 34

National Income

Which of the following is not a component of National Income at factor cost?

  1. A.Wages earned by doctors
  2. B.Rent paid to landlords
  3. C.Indirect taxes
  4. D.Undistributed company profits
  5. E.Interest on loans.
Show the answer and explanation

Answer: C (Indirect taxes)

Explanation

Factor cost counts only payments to factors (wages, rent, interest, profit); indirect taxes are not factor incomes.

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Question 35

Financial Institutions

Which of the financial institutions cannot direct loans to individuals?

  1. A.The Agricultural Bank
  2. B.The Industrial Bank
  3. C.The Central Bank
  4. D.The Co-operative Bank
  5. E.The Standard Bank.
Show the answer and explanation

Answer: C (The Central Bank)

Explanation

The Central Bank deals with the government and banks, not with private individuals.

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Question 36

Public Finance

An ad valorem tax means

  1. A.total amount of an income tax
  2. B.a certain percentage tax on the value of a commodity
  3. C.a certain percentage tax on the volume of commodity
  4. D.a tax on capital gains
  5. E.a profit tax.
Show the answer and explanation

Answer: B (a certain percentage tax on the value of a commodity)

Explanation

'Ad valorem' means 'according to value': the tax is a percentage of the price of the good.

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Question 37

Balance of Payments and Exchange Rates

The foreign exchange rate of a country is

  1. A.the interest rate fixed by the Central Bank
  2. B.the price of one national currency in terms of another
  3. C.the rate at which the Central Bank issues money
  4. D.the rate of interest on government bonds
  5. E.none of the above.
Show the answer and explanation

Answer: B (the price of one national currency in terms of another)

Explanation

An exchange rate is the price of one currency expressed in another currency.

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Question 38

International Trade

The 'terms of trade' means

  1. A.the trade agreement between two countries
  2. B.the difference in the volumes of exports of two countries
  3. C.the value of a unit of export in relation to the value of a unit of import
  4. D.the proportion of total value of exports to the value of total trade
  5. E.none of the above.
Show the answer and explanation

Answer: C (the value of a unit of export in relation to the value of a unit of import)

Explanation

Terms of trade compare export prices with import prices, i.e. how much import one unit of export buys.

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Question 39

Money and Inflation

Which is the most liquid of the following financial assets held by an individual?

  1. A.Outstanding balance on the current account of a commercial bank
  2. B.A credit balance on a savings account
  3. C.A crossed postal order
  4. D.An insurance policy
  5. E.All of the above.
Show the answer and explanation

Answer: A (Outstanding balance on the current account of a commercial bank)

Explanation

A current account balance can be spent at once by cheque, so it is the closest to cash.

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Question 40

Economic Systems

The price mechanism

  1. A.regulates supply and demand
  2. B.rations the consumers
  3. C.rewards the producers
  4. D.allocates scarce resources
  5. E.does all of the above.
Show the answer and explanation

Answer: E (does all of the above.)

Explanation

Prices do several jobs at once: they bring supply and demand together, ration scarce goods among buyers, reward producers with profit and so direct scarce resources to where they are wanted. All four options are functions of the price mechanism.

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Question 41

Theory of Costs and Revenue

When marginal cost equals marginal revenue product

  1. A.the firm is producing at a loss
  2. B.the firm is at a break-even point
  3. C.the firm is making the least profit
  4. D.the supplementary cost of the firm is highest
  5. E.the firm has maximum profit.
Show the answer and explanation

Answer: E (the firm has maximum profit.)

Explanation

A firm maximises profit where the cost of the last unit equals the revenue it brings in (MC = MR).

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Question 42

Theory of Production

Study the table below:
Number of workers — Total product
1 — 10
2 — 28
3 — 48
4 — 72
5 — 80
What is the marginal product of the second worker?

  1. A.10
  2. B.20
  3. C.15
  4. D.18
  5. E.43.
Show the answer and explanation

Answer: D (18)

Explanation

Marginal product of the 2nd worker = 28 − 10 = 18.

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Question 43

National Income

Disposable income equals

  1. A.personal income less business profits
  2. B.personal income less taxes and subsidies
  3. C.national income less borrowing from abroad
  4. D.national income plus transfer payments
  5. E.personal income less taxes plus subsidies.
Show the answer and explanation

Answer: E (personal income less taxes plus subsidies.)

Explanation

Disposable income is what households can actually spend: personal income after paying personal taxes, plus any subsidies they receive.

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Question 44

Market Structures

What do we call a market where there is a large number of buyers and sellers, such that no one has an appreciable influence on prices?

  1. A.Free market
  2. B.Perfectly competitive market
  3. C.Controlled market
  4. D.Stock exchange market
  5. E.Open market.
Show the answer and explanation

Answer: B (Perfectly competitive market)

Explanation

In perfect competition there are so many buyers and sellers that each is a price taker.

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Question 45

Business Organisations

A typical corporate form of business organization is owned by

  1. A.presidents of the country
  2. B.shareholders
  3. C.the general manager and the executives of the business concern
  4. D.a local government
  5. E.foreigners and citizens of the country.
Show the answer and explanation

Answer: B (shareholders)

Explanation

A company (corporation) is owned by the people who hold its shares.

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Question 46

Public Finance

The burden of tax on a commodity whose demand is infinitely inelastic

  1. A.is zero
  2. B.will be borne by seller alone
  3. C.will be borne by buyer alone
  4. D.will be borne by both seller and buyer
  5. E.is impossible to tell who bears it.
Show the answer and explanation

Answer: C (will be borne by buyer alone)

Explanation

If buyers will purchase the same quantity at any price, the seller can pass the whole tax on to them.

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Question 47

National Income

The predominance of non-working wives and housemaids in West Africa

  1. A.will understate the National Income of the countries
  2. B.will overstate the National Income of the countries
  3. C.will lead to constant per capita income over the years
  4. D.will lead to balance of payment deficits
  5. E.will cause unfavourable terms of trade.
Show the answer and explanation

Answer: A (will understate the National Income of the countries)

Explanation

Unpaid housework is not counted in national income, so a lot of real output is left out and income is understated.

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Question 48

Money and Inflation

Inflation can be curbed by

  1. A.increasing aggregate demand
  2. B.paying higher wages
  3. C.increasing government expenditure
  4. D.reducing aggregate demand
  5. E.a deficit budget.
Show the answer and explanation

Answer: D (reducing aggregate demand)

Explanation

Inflation is often caused by too much spending, so reducing aggregate demand slows price rises; the other options add to demand.

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Question 49

Theory of Consumer Behaviour

In most cases, the marginal utility derived from a particular good

  1. A.increases as additional units are consumed
  2. B.increases at a decreasing rate as additional units are consumed
  3. C.decreases at a constant rate as additional units are consumed
  4. D.decreases as additional units are consumed
  5. E.remains constant as additional units are consumed.
Show the answer and explanation

Answer: D (decreases as additional units are consumed)

Explanation

The law of diminishing marginal utility says each extra unit consumed gives less satisfaction than the one before.

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Question 50

Industrialisation

Infant industries are

  1. A.baby clothing factories
  2. B.those which are introducing new products
  3. C.cases of arrested development
  4. D.industries temporarily protected by tariff barriers until mature enough to compete on world markets
  5. E.industries that are allowed to remain permanent cases of adolescence.
Show the answer and explanation

Answer: D (industries temporarily protected by tariff barriers until mature enough to compete on world markets)

Explanation

Infant industries are new local industries given temporary protection until they can compete with foreign producers.

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