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A Level Economics H3 Market Failure Quiz
Free A Level Economics H3 Market Failure quiz, HY3 AI version, with questions, answers, and A Level-style practice for Singapore students.
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A-Level Economics H3 Quiz - Market Failure
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Duration: 60 minutes
Total Marks: 40
Topic: Market Failure (Theme 2.2 of H3 Economics 9809)
Instructions:
This quiz contains 20 questions on Market Failure, covering quasi-public goods (tragedy of the commons, Coase Theorem, club goods) and uncertainty/asymmetric information (adverse selection, moral hazard, principal-agent problems, risk attitudes, policy measures). Answer all questions. Section A: short structured questions (1–10). Section B: applied analysis (11–15). Section C: evaluation and synthesis (16–20). Marks are shown per question. This is syllabus-first practice content generated from inferred patterns; it is not derived from past-year papers.
Section A: Short Structured Questions (1–10)
1. Define "quasi-public good" and give one example. [2]
2. Explain the tragedy of the commons using a fishery example. [2]
3. State the three conditions required for the Coase Theorem to achieve efficient resolution of externalities. [3]
4. Distinguish between a club good and a pure public good. [2]
5. Define adverse selection and state one market where it occurs. [2]
6. Explain moral hazard with reference to car insurance. [2]
7. Identify the principal and the agent in a typical employment relationship. [2]
8. State the meaning of "risk-averse" and contrast it with "risk-inclined". [2]
9. Give two policy measures used to address asymmetric information in insurance markets. [2]
10. What is a tradeable permit? How does it relate to property rights? [3]
Section B: Applied Analysis (11–15)
11. A coastal village shares a common fishing ground. Each boat owner has an incentive to catch as much as possible.
(a) Using the concept of tragedy of the commons, explain why the fish stock may be depleted. [3]
(b) Suggest one Coasean solution and explain how clearly defined property rights help. [3]
12. Consider a used-car market where sellers know the car condition but buyers do not.
(a) Explain how adverse selection leads to a "market for lemons". [3]
(b) Suggest one screening mechanism a buyer might use. [2]
13. A firm pays employees a fixed salary with no monitoring.
(a) Explain the principal-agent problem that arises. [3]
(b) Evaluate one strategy (e.g., efficiency wages) to reduce shirking. [3]
14. The following table shows two health insurance plans:
| Plan | Premium (S$) | Co-payment (%) | Take-up by high-risk (%) | Take-up by low-risk (%) |
|---|---|---|---|---|
| X | 500 | 0 | 80 | 20 |
| Y | 800 | 20 | 60 | 50 |
(a) Using the table, explain the adverse selection problem under Plan X. [3]
(b) How does the co-payment in Plan Y mitigate moral hazard? [2]
15. A government issues tradeable carbon permits to 10 factories, each receiving 100 units. Factory A can abate at 5/unit;FactoryBat15/unit.
(a) If Factory B needs to emit 120 units, how many must it buy from A? [2]
(b) At what maximum price per unit would trade occur? Show reasoning. [3]
Section C: Evaluation and Synthesis (16–20)
16. Evaluate the view that the Coase Theorem shows government intervention is unnecessary for all market failures from asymmetric information. [4]
17. Using nudge theory (from Theme 1), propose a non-price policy to reduce moral hazard in health insurance and explain its limitation. [4]
18. Compare and contrast club goods and quasi-public goods in terms of excludability and rivalry, with examples. [4]
19. A bank lends to borrowers with uncertain project returns.
(a) Explain how asymmetric information creates adverse selection and moral hazard here. [3]
(b) Evaluate the use of signalling by borrowers. [3]
20. "Property rights assignment alone cannot solve tragedy of the commons when user numbers are large." Discuss using evidence from fisheries or climate change. [5]
Answers
A-Level Economics H3 Quiz - Market Failure: Answer Key
Topic: Market Failure (Theme 2.2)
Total Marks: 40
Syllabus-first content; not past-year derived. Answers are teaching notes.
Section A Answers (1–10)
1. [2 marks]
- Definition: A quasi-public good is a good that is partially excludable and/or partially rivalrous (between private and public good). [1]
- Example: Cable TV (excludable via subscription, non-rivalrous) or toll road. [1]
Teaching note: H3 extends H2 by focusing on hybrids like club and common-pool resources.
2. [2 marks]
- Tragedy of the commons: open-access resource overused because individual users capture full benefit but share cost of depletion. [1]
- Fishery example: each boat adds catch at private gain, but stock decline hurts all; no incentive to conserve → stock collapse. [1]
3. [3 marks]
Conditions for Coase Theorem: (1) clearly defined property rights [1]; (2) low/zero transaction costs [1]; (3) rational agents bargaining to efficient outcome [1].
4. [2 marks]
- Club good: excludable, non-rivalrous up to capacity (e.g., Netflix). [1]
- Pure public good: non-excludable, non-rivalrous (e.g., national defence). [1]
5. [2 marks]
- Adverse selection: hidden info before contract → bad-risk types dominate. [1]
- Market: used cars, health insurance, loans. [1]
6. [2 marks]
- Moral hazard: behaviour change after contract due to reduced risk. [1]
- Car insurance: insured may park carelessly or drive recklessly since insurer bears loss. [1]
7. [2 marks]
- Principal: employer (delegates task). [1]
- Agent: employee (acts for principal). [1]
8. [2 marks]
- Risk-averse: prefers certain outcome over gamble with same expected value. [1]
- Risk-inclined: prefers gamble over certain equivalent. [1]
9. [2 marks]
Any two: screening (medical check), signalling (certificates), co-payment, monitoring, efficiency wages. [1 each]
10. [3 marks]
- Tradeable permit: licence to emit/extract up to limit, tradable. [1]
- Relates to property rights: assigns enforceable right to pollute/use; trading internalises externality via market. [2]
Section B Answers (11–15)
11. [6 marks]
(a) [3] Commons open to all → each boat owner marginal private gain > marginal social cost [1]; stock overexploited as no ownership [1]; long-run depletion [1].
(b) [3] Coasean: assign tradable quotas to boats [1]; clear rights let owners bargain/restrict catch [1]; sustainability improved [1].
12. [5 marks]
(a) [3] Sellers hide defects [1]; buyers price average → good cars exit [1]; only lemons remain (Akerlof) [1].
(b) [2] Screening: independent inspection [1]; reduces info gap [1].
13. [6 marks]
(a) [3] Principal (firm) wants effort [1]; agent (worker) may shirk as effort costly, output hard to monitor [1]; divergence = agency loss [1].
(b) [3] Efficiency wage: pay above market [1]; raises cost of job loss, deters shirk [1]; but raises wage bill [1].
14. [5 marks]
(a) [3] Plan X: 0 co-pay, low premium attracts 80% high-risk [1]; low-risk priced out [1]; pool unbalanced, losses [1].
(b) [2] Co-pay shares cost at point of use [1]; reduces overuse/moral hazard [1].
15. [5 marks]
(a) [2] B has 100 free, needs 120 → buys 20 units from A. [2]
(b) [3] Max price between 5and15 [1]; A sells if price > 5[1];Bbuysifprice<15 [1]; any 5–15 efficient.
Section C Answers (16–20)
16. [4 marks]
- Coase works for externalities with low transaction cost [1]; asymmetric info needs disclosure/screening, not just bargaining [1]; govt may set standards [1]; conclusion: not sufficient [1].
Marking: 1 per valid point + eval.
17. [4 marks]
- Nudge: auto-enrol with opt-out (default) [1]; reduces careless claims via reminders [1]; limitation: does not fix info asymmetry fully [1]; may be less effective than co-pay [1].
18. [4 marks]
- Club: excludable, non-rival (e.g., gym) [1+1]; quasi-public (common-pool): rival, non-excludable (e.g., fish) [1+1].
Table format acceptable.
19. [6 marks]
(a) [3] Adverse selection: hidden borrower risk pre-loan [1]; moral hazard: borrower takes risky project post-loan [1]; bank loses [1].
(b) [3] Signalling: collateral/credit score [1]; credible if costlier for bad types [1]; partial fix only [1].
20. [5 marks]
- Large user no. → high transaction cost, Coase fails [1]; fisheries: ITQ help but enforcement hard [1]; climate: global commons, free-ride [1]; property rights incomplete [1]; hence regulation needed [1].
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