Question 1

Which of the following best describes a perfectly competitive market from a societal perspective?

Accepted Answer

A market where prices are determined by supply and demand, and resources are allocated efficiently among buyers and sellers.

Question 2

Suppose the government forces a market to trade only 2 units, even though equilibrium quantity is 5. What is the likely effect on social surplus?

Accepted Answer

Social surplus decreases because not all mutually beneficial trades occur.

Question 3

Which formula correctly represents net social surplus in a simple market?

Accepted Answer

$$Net\ Social\ Surplus = Net\ Consumer\ Surplus + Net\ Producer\ Surplus$$

Question 4

An outcome is Pareto efficient if:

Accepted Answer

No individual can be made better off without making someone else worse off.

Question 5

In a competitive equilibrium, what role do prices play in resource allocation?

Accepted Answer

Prices convey information about scarcity and preferences, guiding resources to their most valued uses.

Question 6

If a market is Pareto efficient but not equitable, what does this imply?

Accepted Answer

It is impossible to make anyone better off without making someone else worse off, but the distribution may be unequal.

Question 7

Suppose a price control is imposed below the equilibrium price after a hurricane. What is the most likely outcome?

Accepted Answer

A shortage, as quantity demanded exceeds quantity supplied.

Question 8

Which area on a supply and demand graph represents deadweight loss when prices are not allowed to move to equilibrium?

Accepted Answer

The yellow triangle between the supply and demand curves at the controlled price.

Question 9

Why might a centralized authority struggle to allocate resources efficiently in a large economy?

Accepted Answer

Because it lacks full information about individual preferences and production technologies.

Question 10

Which of the following is NOT a condition required for the invisible hand to efficiently allocate resources?

Accepted Answer

Presence of public goods.

Question 11

If the equilibrium price in a market is $$40, and Madeleine's willingness to pay (WTP) is 70$$, what is her net consumer surplus?

Accepted Answer

$$Net\ Consumer\ Surplus = 70 - 40 = 30$$

Question 12

Which of the following best illustrates the trade-off between efficiency and equity?

Accepted Answer

An efficient outcome may concentrate benefits among a few, while an equitable outcome spreads benefits more evenly.

Question 13

In the context of Adam Smith's 'invisible hand', what is the primary motivation for producers to supply goods?

Accepted Answer

Producers supply goods due to their own self-interest.

Question 14

Which of the following scenarios is Pareto efficient but may not maximize net social surplus?

Accepted Answer

A market where Jeff and Sean trade at any price, as long as both are better off and no one is worse off.

Question 15

What is the effect of seller market power (e.g., monopoly) on the efficiency of a market?

Accepted Answer

It reduces efficiency by restricting output and raising prices above competitive levels.

Question 16

Suppose after a hurricane, FEMA and Walmart intervene to supply goods at a controlled price. What economic problem might arise?

Accepted Answer

A shortage, as the controlled price may be below equilibrium, increasing demand and reducing supply.

Question 17

Which of the following is a real-world example illustrating the difference a free market makes, as shown in the study materials?

Accepted Answer

The GDP growth of North Korea compared to South Korea.

Question 18

If a market is allowed to operate freely and competitively, what is the expected outcome regarding the allocation of goods?

Accepted Answer

Goods are allocated to those who value them most, maximizing social surplus.

Question 19

Which of the following is NOT a source of market failure?

Accepted Answer

Perfect competition.

Question 20

In a simple market, what does the area between the demand curve and the equilibrium price up to the equilibrium quantity represent?

Accepted Answer

Gross consumer surplus.

Perfect Competition and the Invisible Hand: Efficiency, Equity, and Market Outcomes

Study Guide - Practice Questions