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Module 1 Quiz: Understanding Economic Thinking

Test your understanding of the key concepts from Module 1. Each question has one correct answer. Click "Show Answer" to check your response.

1. What is the fundamental problem that gives rise to economics as a discipline?

  1. Poverty in developing countries
  2. Scarcity of resources relative to unlimited wants
  3. Unequal distribution of income
  4. Government budget deficits
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The correct answer is B. Scarcity — the gap between limited resources and unlimited wants — is the starting point for all of economics. Poverty (A), inequality (C), and deficits (D) are important economic issues, but they are consequences of scarcity, not the fundamental problem itself. Even wealthy societies face scarcity because resources are always finite relative to desires.

Concept Tested: Scarcity

2. You have a Saturday afternoon free. You could earn ₹500 at a part-time job, study for an exam, or watch a film with friends. You choose to study. What is your opportunity cost?

  1. ₹500 (the job earnings)
  2. ₹500 plus the film
  3. The film with friends
  4. Whichever of the job or the film you value more
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The correct answer is D. Opportunity cost is the value of the single best alternative you forgo — not all alternatives combined (B). If you value the ₹500 more than the film, the opportunity cost is ₹500 (A). If you value the film more, the opportunity cost is the film (C). Without knowing your preferences, the correct general answer is D.

Concept Tested: Opportunity Cost

3. A firm is considering hiring one additional worker. The worker would add ₹8,000 per month in revenue and cost ₹6,000 per month in wages. What does marginal thinking suggest?

  1. Do not hire — the firm already has enough workers
  2. Hire the worker — marginal benefit (₹8,000) exceeds marginal cost (₹6,000)
  3. Hire the worker only if total profits are positive
  4. Cannot decide without knowing the firm's total revenue
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The correct answer is B. Marginal thinking evaluates decisions at the margin: if the additional revenue from one more worker (₹8,000) exceeds the additional cost (₹6,000), the firm should hire. Total profits (C) and total revenue (D) are irrelevant to this particular decision — what matters is the change caused by this one hire.

Concept Tested: Marginal Thinking

4. You paid ₹2,000 for a non-refundable train ticket to Goa. The night before the trip, a friend offers you a free ticket to a concert you would enjoy more. You decide to go to Goa because "I already paid for the ticket." Which concept explains your mistake?

  1. Opportunity cost
  2. Comparative advantage
  3. Sunk cost fallacy
  4. Loss aversion
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The correct answer is C. The ₹2,000 is a sunk cost — it is gone whether you go to Goa or the concert. A rational decision-maker ignores sunk costs and compares only the future benefits of each option. Since you would enjoy the concert more, you should go to the concert. Loss aversion (D) is related but distinct — it describes the general tendency to weigh losses more heavily than gains, while the sunk cost fallacy specifically involves letting irrecoverable past costs distort future decisions.

Concept Tested: Sunk Cost Fallacy

5. Which of the following is a normative economic statement?

  1. India's GDP growth rate was 7.2% in 2023
  2. Inflation disproportionately affects low-income households
  3. The government should increase spending on education
  4. An increase in the price of petrol reduces the quantity demanded
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The correct answer is C. "The government should increase spending on education" is a value judgment about what ought to be done. Options A, B, and D are all positive statements — claims about facts that can be tested with data. The word "should" is a strong signal that a statement is normative.

Concept Tested: Positive vs. Normative Economics

6. An economy produces only two goods: rice and textiles. It is currently producing at a point inside its Production Possibilities Frontier. What does this indicate?

  1. The economy needs more resources to grow
  2. The economy is producing efficiently
  3. The economy has unemployed resources or inefficiency
  4. The economy should specialize in one good
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The correct answer is C. A point inside the PPF means the economy is not using all its available resources efficiently — it could produce more of one or both goods without giving up anything. Points on the frontier represent efficiency (B). Points outside the frontier are currently unattainable (A addresses this but incorrectly). Specialization (D) is a different concept related to trade.

Concept Tested: Production Possibilities Frontier

7. In The Big Short, mortgage brokers issue loans to borrowers who cannot repay because the brokers earn commissions regardless of loan performance. Which economic concept best describes this problem?

  1. Opportunity cost
  2. Moral hazard
  3. Comparative advantage
  4. Diminishing marginal returns
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The correct answer is B. Moral hazard occurs when someone takes excessive risks because they do not bear the consequences. The brokers earned fees for issuing loans but did not suffer if borrowers defaulted — that risk was passed to investors who bought the bundled mortgage products. This misalignment of incentives was a central cause of the 2008 financial crisis.

Concept Tested: Moral Hazard / Incentives

8. Richard Thaler's research found that people randomly given a mug demanded about $7 to sell it, while people not given a mug were willing to pay only about $3. This demonstrates:

  1. The law of demand
  2. The endowment effect
  3. Comparative advantage
  4. Diminishing marginal utility
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The correct answer is B. The endowment effect describes the tendency for people to value something more highly once they own it. The mug experiment is one of the most famous demonstrations of this bias. Standard economics predicts that the buying and selling prices should be roughly equal (willingness to pay should equal willingness to accept), but the 2:1 ratio Thaler observed is a systematic deviation from rational choice theory, driven by loss aversion.

Concept Tested: Endowment Effect / Behavioral Economics

9. India's Swachh Bharat Mission used community monitoring and social norms messaging alongside toilet construction to change sanitation behavior. In Thaler's framework, these behavioral interventions are examples of:

  1. Market equilibrium adjustments
  2. Pigouvian taxes
  3. Nudges
  4. Price controls
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The correct answer is C. A nudge is a change in choice architecture that steers behavior without restricting freedom. Social norms messaging ("your neighbors have already adopted this behavior") and community monitoring change the context in which people make decisions, making the desired behavior (using toilets) feel more natural and socially expected — without mandating it or changing its price.

Concept Tested: Nudges / Choice Architecture

10. Consider the 2018 IL&FS crisis in India and the 2008 US housing crisis. Both involved financial institutions taking excessive short-term risks, credit rating agencies maintaining high ratings until near-collapse, and government intervention to prevent systemic damage. What is the common underlying economic problem?

  1. Scarcity of financial regulation
  2. Misaligned incentives at every link in the financial chain
  3. Insufficient government spending
  4. Too many participants in the financial market
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The correct answer is B. In both crises, the incentive structure at each link — lenders, packagers, rating agencies, regulators — rewarded short-term risk-taking while passing long-term consequences to others. This is a systemic incentive misalignment, not simply a shortage of regulation (A) or spending (C). More participants (D) can actually improve markets through competition; the problem was not the number of actors but the rules governing their behavior.

Concept Tested: Incentives / Moral Hazard / Financial Crises

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