When does X-inefficiency occur?
Correct answer B. Costs are higher than they could be due to a lack of competitive pressure
Topic / 34 questions
Monopoly MCQs cover how a single seller with no close substitutes decides its price and output, and how this differs from perfect competition. They suit economics students and competitive exam candidates, and each question reveals its correct answer immediately, so you can test your reasoning as you go.
Correct answer B. Costs are higher than they could be due to a lack of competitive pressure
Correct answer B. The price set is greater than the marginal cost
Correct answer A. Mobility of resources
Correct answer D. There is one main seller
Correct answer A. The price is greater than the marginal cost
Correct answer B. A single firm is very large
Correct answer C. Below the price because the price effect outweighs the output effect
Correct answer A. In competitive markets price equals marginal cost; in monopolised markets price exceeds marginal cost
Correct answer C. Thomson has a legally protected exclusive right to produce this textbook
Correct answer C. Underproduction of the good
Correct answer A. Does not exist
Correct answer B. Increase competition in an industry by preventing mergers and breaking up large firms
Correct answer C. Perfect price discrimination generates a deadweight loss
Correct answer C. There is some barrier to entry to that market
Correct answer B. One seller of the product
Correct answer D. Marginal revenue equals marginal cost
Correct answer D. All of the above
Correct answer D. All of the above
Correct answer D. The section with the most inelastic demand
Correct answer B. Lies below and diverges from the demand curve
This topic deals with market power. Questions examine why a monopolist's marginal revenue is below price, why profit is maximised where marginal revenue equals marginal cost, and why a monopolist has no supply curve in the usual sense. You will also compare monopoly with perfect competition: higher prices, lower output and deadweight loss. Other items cover X-inefficiency, where a firm sheltered from competition fails to keep costs down, and what a firm should do when marginal revenue exceeds marginal cost. These graphs and rules appear regularly in microeconomics papers and economics lecturer tests.
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A monopolist faces the downward-sloping market demand curve, so to sell one more unit it must lower the price on all units sold, not just the extra one. The revenue lost on earlier units means marginal revenue is below the price. For a linear demand curve, the marginal revenue curve is twice as steep.
X-inefficiency occurs when a firm does not produce at the lowest possible cost because it lacks competitive pressure. A monopolist may tolerate waste, overstaffing or poor management since rivals cannot take its customers. The term was introduced by economist Harvey Leibenstein in 1966.
MCQs360 has 35 Monopoly MCQs in its Economics section. They are free to practise with no sign-up, and each answer appears instantly, letting you check rules such as MR equals MC and the effects of market power quickly.
Last reviewed October 2026