Unit 1: Demand and Supply Analysis - Practice Quiz

ECO106 — Introduction To Economics 60 Questions
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1 Economics is mainly concerned with the study of how people use

Nature and scope of economics Easy
A. Money alone
B. Unlimited resources
C. Scarce resources
D. Free goods only

2 The basic economic problem arises because human wants are

Nature and scope of economics Easy
A. Limited and resources are unlimited
B. Unlimited and resources are scarce
C. Unrelated to available resources
D. Equal to available resources

3 Which branch of economics studies individual consumers and firms?

Branches of economics Easy
A. Macroeconomics
B. Microeconomics
C. Public economics
D. International economics

4 Which branch of economics studies the economy as a whole?

Branches of economics Easy
A. Microeconomics
B. Household economics
C. Business economics
D. Macroeconomics

5 A positive economic statement is one that can be

Positive and normative economics Easy
A. Based only on opinions
B. Designed to express approval
C. Tested using facts
D. Required by moral values

6 Which statement is normative?

Positive and normative economics Easy
A. The price of rice increased
B. The government should reduce poverty
C. Exports increased in June
D. Unemployment fell last year

7 Demand refers to the quantity of a good that consumers are willing and able to

Meaning of demand Easy
A. Store without using
B. Produce at any price
C. Supply to producers
D. Purchase at a given price

8 Which condition is necessary for a desire to become demand?

Meaning of demand Easy
A. The seller must lower costs
B. The desire must be expensive
C. The buyer must have purchasing power
D. The good must be imported

9 According to the law of demand, when price rises, quantity demanded usually

Law of demand Easy
A. Remains fixed
B. Rises
C. Becomes unlimited
D. Falls

10 The demand curve generally slopes

Law of demand Easy
A. Horizontally from right to left
B. Upward from left to right
C. Downward from left to right
D. Vertically from top to bottom

11 An increase in consumer income generally increases demand for a

Determinants of demand Easy
A. Public loss
B. Scarce resource
C. Free good
D. Normal good

12 Which factor can directly affect the demand for a product?

Determinants of demand Easy
A. Production technology only
B. Consumer tastes
C. Factory size only
D. Weather at the factory only

13 According to the law of supply, when price rises, quantity supplied usually

Law of supply Easy
A. Disappears
B. Falls
C. Rises
D. Remains zero

14 The supply curve generally slopes

Law of supply Easy
A. Upward from left to right
B. Parallel to the demand curve
C. Downward from left to right
D. Straight downward only

15 An improvement in production technology usually causes supply to

Determinants of supply Easy
A. Remain unrelated
B. Decrease
C. Increase
D. Become zero

16 An increase in the cost of raw materials usually causes supply to

Determinants of supply Easy
A. Remain unchanged always
B. Decrease
C. Become perfectly elastic
D. Increase

17 Market equilibrium occurs when

Market equilibrium and price determination Easy
A. Demand is greater than supply
B. Quantity demanded equals quantity supplied
C. Price is at its highest
D. Supply is greater than demand

18 The price at which quantity demanded equals quantity supplied is called the

Market equilibrium and price determination Easy
A. Support price
B. Maximum price
C. Equilibrium price
D. Profit price

19 A change in the price of a good causes a movement

Movements and shifts in demand and supply curves Easy
A. Along its demand curve
B. Away from the market
C. To a new demand curve
D. To a new supply curve

20 A change in consumer income usually causes the demand curve to

Movements and shifts in demand and supply curves Easy
A. Move along itself only
B. Become vertical
C. Disappear
D. Shift

21 A city has funds to build either a public hospital or a sports complex, but not both. Which economic idea is illustrated by this choice?

Nature and scope of economics Medium
A. Consumer sovereignty
B. Market equilibrium
C. Opportunity cost
D. Unlimited wants

22 Why does economics study how people make choices among alternative uses of resources?

Nature and scope of economics Medium
A. Production always exceeds consumption
B. Wants are identical across households
C. Markets eliminate all resource limits
D. Resources are scarce relative to wants

23 An economist studies how a rise in the central bank's interest rate may affect national inflation and unemployment. This is mainly an example of:

Branches of economics Medium
A. Microeconomics
B. Macroeconomics
C. Business accounting
D. Consumer psychology

24 Which question is primarily microeconomic?

Branches of economics Medium
A. How does a firm choose its output level?
B. Why did economic growth slow?
C. Why did national unemployment increase?
D. What determines the general price level?

25 Which statement is normative rather than positive?

Positive and normative economics Medium
A. The government should subsidize public transport
B. A shortage causes upward pressure on price
C. Higher wages can raise production costs
D. A tax increase reduced cigarette sales

26 Which statement can be tested using economic data without making a value judgment?

Positive and normative economics Medium
A. The minimum wage should be increased
B. Income inequality is morally unacceptable
C. A rent ceiling created excess demand
D. Public housing deserves more funding

27 In economics, demand for a product refers to the quantity consumers:

Meaning of demand Medium
A. Are willing and able to buy at various prices
B. Actually bought during the previous year
C. Want, whether or not they can pay
D. Can buy, regardless of their preferences

28 A student wants a laptop but has no money or credit to purchase it. In demand analysis, this desire is:

Meaning of demand Medium
A. Potential supply
B. Not effective demand
C. An increase in demand
D. Effective demand

29 If the price of a normal good falls, with other factors unchanged, what will usually happen?

Law of demand Medium
A. Demand will become perfectly inelastic
B. Quantity demanded will decrease
C. Demand will shift left
D. Quantity demanded will increase

30 A demand schedule shows that quantity demanded rises from 40 to 60 units when price falls from $10 to $8. This represents:

Law of demand Medium
A. An increase in supply
B. A movement along the demand curve
C. A leftward shift in demand
D. A rightward shift in demand

31 Tea and coffee are substitutes. If the price of coffee rises while other factors remain constant, what is likely to happen in the tea market?

Determinants of demand Medium
A. Tea demand shifts left
B. Tea supply shifts left
C. Tea quantity supplied falls
D. Tea demand shifts right

32 If household income rises and restaurant meals are a normal good, which outcome is most likely?

Determinants of demand Medium
A. Demand for restaurant meals shifts right
B. Quantity demanded falls along the curve
C. Supply of restaurant meals shifts left
D. Demand becomes unrelated to price

33 Why does a higher market price generally encourage producers to offer more of a good?

Law of supply Medium
A. Higher prices eliminate production costs
B. Higher prices can increase expected profit
C. Higher prices reduce consumer income
D. Higher prices make resources unlimited

34 A rise in the price of a product causes firms to expand production along their existing supply curve. This is called:

Law of supply Medium
A. An increase in supply
B. A decrease in quantity supplied
C. An increase in quantity supplied
D. A decrease in supply

35 A new technology lowers the cost of producing smartphones. Assuming other factors are unchanged, the supply of smartphones will:

Determinants of supply Medium
A. Shift to the right
B. Move upward along the curve
C. Remain fixed by demand
D. Shift to the left

36 If a government imposes a per-unit tax on producers, what is the most likely immediate effect on supply?

Determinants of supply Medium
A. Demand shifts right
B. Quantity demanded rises at every price
C. Supply shifts left
D. Supply shifts right

37 Suppose demand is and supply is . What are the equilibrium price and quantity?

Market equilibrium and price determination Medium
A. ,
B. ,
C. ,
D. ,

38 If the market price is below the equilibrium price, which condition is most likely to occur?

Market equilibrium and price determination Medium
A. Equilibrium quantity automatically increases
B. A shortage puts upward pressure on price
C. Producers face no incentive to adjust
D. A surplus puts downward pressure on price

39 Which event causes a leftward shift of the demand curve for a normal good?

Movements and shifts in demand and supply curves Medium
A. A fall in consumer income
B. A fall in the good's own price
C. A rise in consumer income
D. A rise in the price of a substitute

40 A drought reduces the harvest of wheat, while demand remains unchanged. What is the likely market result?

Movements and shifts in demand and supply curves Medium
A. Lower price and higher quantity
B. Higher price and higher quantity
C. Higher price and lower quantity
D. Unchanged price and lower demand

41 A city has a fixed budget and must choose between expanding a hospital and upgrading public transport. Which economic principle is most directly involved when the value of the forgone transport project is evaluated?

Nature and scope of economics Hard
A. The marginal-product principle
B. The specialization principle
C. The opportunity-cost principle
D. The scarcity principle

42 Why can economics analyze a decision even when no money changes hands?

Nature and scope of economics Hard
A. Economic analysis applies only to public goods
B. Resources are unlimited in nonmarket decisions
C. Choice involves trade-offs under scarcity
D. Utility can be measured only through prices

43 A researcher estimates how a 10% increase in the minimum wage affects employment in one city while holding other factors constant. This is primarily an example of:

Branches of economics Hard
A. Macroeconomic positive analysis
B. Microeconomic normative analysis
C. Microeconomic positive analysis
D. Macroeconomic normative analysis

44 Which question is most clearly macroeconomic rather than microeconomic?

Branches of economics Hard
A. How a household responds to a tax on coffee
B. How inflation affects the national unemployment rate
C. How a subsidy changes a farmer's output
D. How a firm chooses its profit-maximizing price

45 Which statement is normative rather than positive?

Positive and normative economics Hard
A. The government ought to subsidize public transportation
B. A higher tax on gasoline reduces gasoline consumption
C. The tax increased average commuting costs
D. Gasoline demand is relatively price inelastic

46 Which combination correctly classifies the statements? I. A price ceiling below equilibrium creates excess demand. II. Essential medicines should be affordable to everyone.

Positive and normative economics Hard
A. I normative; II normative
B. I normative; II positive
C. I positive; II normative
D. I positive; II positive

47 Which situation represents an increase in quantity demanded rather than an increase in demand for a product?

Meaning of demand Hard
A. A fall in the price of a complement
B. A rise in consumers' income
C. A shift in consumer preferences toward the product
D. A fall in the product's own price

48 A consumer wants a luxury car but cannot afford it. In standard economic analysis, this desire is not counted as demand because demand requires:

Meaning of demand Hard
A. A preference for necessity goods
B. A government-approved purchase plan
C. A perfectly elastic response to price
D. Willingness and ability to pay

49 A good has a downward-sloping demand curve, but a price increase raises total expenditure on it. Which inference is most justified?

Law of demand Hard
A. Demand is price inelastic over that range
B. The good must be an inferior good
C. Demand is price elastic over that range
D. The law of demand has been violated

50 Which observation would most plausibly represent a Giffen-good exception to the usual law of demand?

Law of demand Hard
A. A price rise lowers demand for a luxury watch
B. A price rise increases demand for a strongly inferior staple
C. A price fall increases demand for a normal restaurant meal
D. A price rise leaves demand unchanged for a necessary drug

51 Coffee and tea are substitutes. If the price of coffee rises while income and other factors remain constant, the demand curve for tea will most likely:

Determinants of demand Hard
A. Remain fixed while moving downward
B. Become vertical at the original price
C. Shift rightward
D. Shift leftward

52 A normal good experiences a fall in its own price and a simultaneous fall in consumers' incomes. Which outcome cannot be determined without additional information?

Determinants of demand Hard
A. The final equilibrium quantity demanded
B. The price change causes movement along demand
C. Demand shifts because of the income fall
D. Quantity demanded changes because of the price fall

53 For an upward-sloping supply curve, a rise in the market price of the good, with all other factors unchanged, causes:

Law of supply Hard
A. An increase in supply
B. An increase in quantity supplied
C. A decrease in productive capacity
D. A leftward shift of supply

54 A firm can expand output only by using increasingly expensive inputs. Which explanation best supports an upward-sloping market supply curve in the long run?

Law of supply Hard
A. Marginal cost tends to rise as output expands
B. Consumer income falls as output expands
C. Demand becomes perfectly inelastic at high output
D. The good becomes inferior at high production

55 A technological improvement lowers the unit cost of producing solar panels, while the market price remains unchanged. The most direct result is:

Determinants of supply Hard
A. A rightward shift of the supply curve
B. A movement downward along the demand curve
C. A movement upward along the supply curve
D. A leftward shift of the supply curve

56 Suppose the government introduces a per-unit tax on producers while demand remains unchanged. In a standard supply-and-demand diagram, the supply curve will:

Determinants of supply Hard
A. Shift downward by the tax per unit
B. Shift upward by the tax per unit
C. Rotate until it becomes vertical
D. Remain unchanged because taxes affect demand

57 Market demand and supply are and . If the government sets a price floor of $25, what is the resulting surplus?

Market equilibrium and price determination Hard
A. 40 units
B. 20 units
C. 80 units
D. 60 units

58 Market demand and supply are and . If demand increases by 20 units at every price, what are the new equilibrium price and quantity?

Market equilibrium and price determination Hard
A. ,
B. ,
C. ,
D. ,

59 At the current market price, quantity demanded exceeds quantity supplied. In a competitive market with no price controls, the most likely adjustment is:

Market equilibrium and price determination Hard
A. Price rises and the shortage contracts
B. Price falls and the shortage expands
C. Demand shifts right until the price is fixed
D. Supply shifts left until demand disappears

60 A drought reduces the supply of wheat, while consumers simultaneously become more willing to buy wheat products. What can be concluded unambiguously about equilibrium?

Movements and shifts in demand and supply curves Hard
A. Equilibrium price rises
B. Equilibrium quantity falls
C. Equilibrium price remains unchanged
D. Equilibrium quantity rises