EconomicsICSE Class 10 · Chapter 7

Market ICSE Class 10 Economics: Perfect Competition, Monopoly and More

Updated 14 October 2026 · Fact-checked

In economics, a market is the arrangement through which buyers and sellers come into contact to exchange a commodity at a price; it need not be a place. ICSE Class 10 tests the meaning of market and four market types, perfect competition, monopoly, monopolistic competition and oligopoly, with examples, their features and the differences between them.

What Market is about

In daily speech a market is a place such as a vegetable market or a mall. In economics, the word means something wider: any arrangement, physical or online, through which buyers and sellers interact, so that the price and the quantity exchanged of a commodity are determined.

Markets differ in how many sellers there are, whether the products are identical or different, and how easily new firms can enter. On this basis the syllabus asks for four types: perfect competition, monopoly, monopolistic competition and oligopoly, with the meaning and examples of each, a brief understanding of their features, and the differences among them.

Board questions are often situation-based: the State Electricity Board charging lower rates to households than to businesses (price discrimination under monopoly), logos of car makers or telecom companies (oligopoly), or which market has the fewest sellers (monopoly). CISCE examiners' comments show students defining market without mentioning price and quantity, confusing monopoly with oligopoly, missing 'odd one out', and listing only examples in difference questions.

Weightage: CISCE publishes no chapter weightage. The paper has a compulsory Section A (40 marks: 16 one-mark MCQs and three 8-mark questions of four 2-mark parts) and Section B, where you answer any four of six 10-mark questions (two 5-mark parts each).Source: CISCE ICSE Economics (641) specimen paper structure, 2025, retained for 2027 by the CISCE circular of 9 October 2026

Key concepts

Meaning of market

In economics, a market refers to the whole system or arrangement through which buyers and sellers of a commodity come into contact with each other, directly or indirectly, to buy and sell at a price, so that the price and the quantity exchanged are determined.

Elements of a market: a commodity; buyers and sellers; contact between them (in person, by phone or online); a price; and an area, which may be local, national or international.

So an online platform where buyers order phones from sellers across the country is a market, even though there is no single place.

Worked example

(2 marks) How do we define the term market in economics?

Try it first, then show the solutionSolution

A market is the arrangement through which buyers and sellers of a commodity come into contact, directly or indirectly - 1 mark.
Their interaction determines the price and the quantity of the commodity exchanged; it need not be a fixed place - 1 mark.

Answer: In economics, a market is the system through which buyers and sellers of a commodity interact, in person or otherwise, so that the price and quantity exchanged are determined. It is not necessarily a physical place.

Perfect competition

Perfect competition is a market with a very large number of buyers and sellers selling a homogeneous (identical) product, where no single buyer or seller can influence the price.

Features:
1. Very large number of buyers and sellers: each is too small to affect the market price.
2. Homogeneous product: all units are identical, so buyers do not prefer one seller.
3. Free entry and exit of firms.
4. Perfect knowledge of market conditions among buyers and sellers.
5. Perfect mobility of factors and no transport cost differences.
6. Uniform price: one price prevails; each firm is a price taker, and the firm's demand curve is horizontal (perfectly elastic).
7. No advertising, since products are identical.

Examples: perfect competition is rare, but markets for wheat, rice and other farm products, and the share market, come close.

Worked example

(2 marks) Why is a firm under perfect competition called a 'price taker'?

Try it first, then show the solutionSolution

There are so many sellers of an identical product that each firm supplies a tiny share of total output - 1 mark.
No firm can change the market price; it must accept the price fixed by market demand and supply - 1 mark.

Answer: Each firm is one of a very large number selling an identical product, so it cannot influence the market price; it simply accepts (takes) the price set by total demand and supply.

Monopoly

Monopoly is a market with a single seller of a product that has no close substitutes, where entry of new firms is restricted.

Features:
1. Single seller: the firm and the industry are the same.
2. No close substitutes for the product.
3. Restricted entry: legal barriers (licences, patents, government ownership), control of key raw materials or very large capital requirements keep new firms out. The implication is that the monopolist faces no competition, can set its own price and can earn abnormal (super-normal) profits even in the long run.
4. Price maker: the monopolist decides the price (or the quantity), though it cannot fix both, because demand still responds to price.
5. Price discrimination: the monopolist may charge different prices to different buyers for the same product, for example a State Electricity Board charging lower rates for domestic use than for commercial use, or railways charging different fares to different classes of passengers.
6. Downward-sloping demand curve.

Examples: Indian Railways, a State Electricity Board in its area, the local water supply authority, a firm holding a patent on a medicine.

Worked example

(2 marks) What is the implication of 'restricted entry of new firms' in a monopoly market?

Try it first, then show the solutionSolution

Barriers such as licences, patents or control of raw materials prevent new firms from entering - 1 mark.
So the monopolist faces no competition, can fix its price and continue to earn abnormal profits in the long run - 1 mark.

Answer: Because barriers like licences, patents or control of raw materials keep rivals out, the monopolist faces no competition; it can set its price and keep earning abnormal profits even in the long run.

Monopolistic competition

Monopolistic competition is a market with a large number of sellers selling differentiated products that are close substitutes for each other.

Features:
1. Large number of sellers, each with a small share of the market.
2. Product differentiation: products are similar but not identical; they differ in brand name, quality, design, colour or packaging, so each seller has some loyal customers.
3. Some control over price: because of brand loyalty, each firm can set its price within limits, but close substitutes stop it from raising prices too much.
4. Free entry and exit of firms.
5. Selling costs: heavy spending on advertising and sales promotion to attract buyers.
6. Downward-sloping, fairly elastic demand curve for each firm.

Examples: toothpaste (several brands), soaps, shampoos, ready-made garments, restaurants, hair salons.

Worked example

(2 marks) What is product differentiation? Why is it important in monopolistic competition?

Try it first, then show the solutionSolution

Product differentiation means making one's product appear different from similar products through brand, quality, design or packaging - 1 mark.
It gives each seller some loyal buyers and some control over price, which is why firms spend heavily on advertising - 1 mark.

Answer: Product differentiation is distinguishing a product from close substitutes by brand, design, quality or packaging. Under monopolistic competition it creates brand loyalty, giving each firm a degree of control over price, and leads to heavy selling costs.

Oligopoly

Oligopoly is a market dominated by a few large sellers, whose decisions affect one another.

Features:
1. Few sellers, each with a large share of the market.
2. Interdependence: each firm must consider how rivals will react to its price or output changes.
3. Products may be homogeneous (cement, steel) or differentiated (cars, mobile networks, soft drinks).
4. Barriers to entry: large capital, brand strength and economies of scale make entry difficult.
5. Heavy advertising and selling costs.
6. Price rigidity: firms avoid changing prices for fear of price wars; they often compete on advertising and features instead.
7. Tendency to form groups or agreements (collusion), which may be illegal.

Examples: car manufacturers (Maruti, Tata, Hyundai), mobile telecom companies, soft-drink companies, airlines, cement companies.

Worked example

(1 mark) Maruti, Tata and Hyundai are examples of which form of market?

Try it first, then show the solutionSolution

They are a few large automobile companies that dominate the market and react to one another's decisions.

Answer: Oligopoly.

Differences among market forms

Perfect competition versus monopoly:

Number of sellers: very large versus one.
Product: homogeneous versus no close substitutes.
Entry: free versus restricted.
Price: price taker versus price maker; price discrimination possible only under monopoly.
Demand curve of the firm: horizontal versus downward sloping.

Perfect competition versus oligopoly:

Number of sellers: very large versus few.
Product: homogeneous versus homogeneous or differentiated.
Interdependence: none versus strong.
Entry: free versus difficult.
Advertising: none versus heavy.
Price: uniform market price, firms are price takers, versus price set by firms, often rigid.

Monopolistic competition versus monopoly: many sellers of differentiated close substitutes with free entry, versus one seller with no close substitutes and restricted entry.

When writing differences, give the meaning of each point for both markets, not only examples.

Worked example

(3 marks) Give three differences between perfect competition and oligopoly.

Try it first, then show the solutionSolution

Number of sellers: very large under perfect competition; a few large sellers under oligopoly - 1 mark.
Entry: free under perfect competition; difficult under oligopoly because of high capital and brand power - 1 mark.
Price and interdependence: firms are price takers and independent under perfect competition; under oligopoly firms are interdependent and set prices, often keeping them rigid - 1 mark.

Answer: (1) Perfect competition has a very large number of sellers; oligopoly has a few large ones. (2) Entry is free in perfect competition but difficult in oligopoly. (3) Perfectly competitive firms are independent price takers; oligopolists are interdependent and set prices that tend to be rigid.

Market in real life

Each concept, met in an everyday situation. Read the situation, answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

Price discrimination under monopoly

Suppose your family pays a lower rate per unit for electricity at home than the shop next door pays for the same electricity from the same State Electricity Board.

Which market form and practice does this show? Why can the Board do it?

Try it first, then show the solutionSolution

The Board is the only supplier in the area: monopoly.
Charging different prices to different buyers for the same product is price discrimination.
It is possible because there is no rival supplier and buyers cannot resell electricity to one another.

Answer: It shows price discrimination by a monopoly. As the only supplier, the Board can charge households and businesses different rates, and since electricity cannot be resold, the two markets stay separate.

Memory hook: One seller, many prices.

Monopolistic competition

Imagine walking down a supermarket aisle with twenty brands of toothpaste, each promising whiter teeth or fresher breath, at slightly different prices.

Identify the market form and two of its features shown here.

Try it first, then show the solutionSolution

Many sellers of similar but differentiated products: monopolistic competition.
Feature 1: product differentiation through brands and claims.
Feature 2: selling costs (advertising) and some control over price.

Answer: Monopolistic competition: many sellers, product differentiation by brand and claims, heavy advertising, and some control over price within limits.

Memory hook: Many brands, small differences, big adverts.

Oligopoly interdependence

Suppose one of the three main mobile network companies cuts its data prices, and within a week the other two announce similar cuts.

Which feature of which market form does this show?

Try it first, then show the solutionSolution

Few large sellers dominate the market: oligopoly.
Each firm reacts to the others' price moves: interdependence.
Price changes trigger quick matching responses, which is why oligopolists often avoid price wars.

Answer: It shows interdependence under oligopoly: with only a few large sellers, one firm's price cut forces rivals to respond.

Memory hook: In an oligopoly, every move gets a reply.

Topics in this chapter

Types of Market: Features and Differences

Market: key facts

Perfect competition: Very many sellers; homogeneous; free entry; price taker; horizontal firm demand curve; Wheat, rice markets (near).
Monopoly: One seller; no close substitutes; restricted entry; price maker; price discrimination; Indian Railways, State Electricity Board.
Monopolistic competition: Many sellers; differentiated close substitutes; free entry; selling costs; Toothpaste, soap, restaurants.
Oligopoly: Few large sellers; interdependence; barriers; advertising; price rigidity; Cars, telecom, soft drinks, airlines.
Fewest sellers: Monopoly (one)

How the board asks Market

The question patterns to expect, and the method that works for each.

Question type	How it is asked	Method
Situation and logo MCQs (Section A)	Different electricity rates for homes and shops; car company names; fewest sellers; odd one out among features.	Price discrimination = monopoly; few big brands = oligopoly; one seller = monopoly; read 'odd one out'.
Define or explain (2 marks)	Meaning of market; implication of restricted entry; price taker.	Include price and quantity in the market definition; explain implications, not just restate.
Identify and differentiate (5 marks)	Identify a market from logos and define it; three differences between perfect competition and oligopoly.	Define, then give differences point by point with meanings.

Tricks to remember Market

Short memory aids. Say each one aloud once, then use it on a question the same day.

1-few-many-very many
Monopoly (1), oligopoly (few), monopolistic competition (many, differentiated), perfect competition (very many, identical).
Use it when: Ordering by number of sellers.
Mono-Poly
'Mono' = one; 'oligo' = few; 'poly' = sellers.
Use it when: Not confusing monopoly with oligopoly.
PC = Price taker, Copies
Perfect Competition: price takers selling identical copies.
Use it when: Features.

Market: board-level solved questions

Ordered from board level to HOTS. Cover the solution, write your own, then compare step by step.

Example 1: Fewest sellers · 1 mark · MCQBoard level

Which market structure has the least number of sellers?
(a) Perfect competition
(b) Monopolistic competition
(c) Oligopoly
(d) Monopoly

Try it first, then show the solutionSolution

Monopoly has only one seller; oligopoly has a few.

Answer: (d) Monopoly.

Example 2: Electricity rates · 1 mark · MCQHarder board level

The State Electricity Board sells electricity at cheaper rates for domestic use than for commercial use. This is an act of:
(a) product differentiation
(b) price discrimination
(c) selling cost
(d) interdependence

Try it first, then show the solutionSolution

The same product is sold at different prices to different buyers.
This is price discrimination, possible under monopoly.

Answer: (b) price discrimination.

Example 3: Odd one out · 1 mark · MCQHarder board level

With reference to perfect competition, choose the odd one out:
(a) Homogeneous product
(b) Free entry and exit
(c) Heavy advertising
(d) Large number of buyers and sellers

Try it first, then show the solutionSolution

Homogeneous products, free entry and many buyers and sellers are features of perfect competition.
With identical products there is no need for advertising.

Answer: (c) Heavy advertising.

Example 4: Definition of market · 2 marks · Very short answerBoard level

How can we define the term market in economics?

Try it first, then show the solutionSolution

It is the arrangement through which buyers and sellers of a commodity come into contact.
Through their interaction the price and quantity exchanged are determined; no fixed place is needed.

Answer: A market is the arrangement through which buyers and sellers of a commodity interact, directly or indirectly, determining the price and quantity exchanged; it need not be a physical place.

Example 5: Identify from logos and differentiate · 5 marks · Long answerHarder board level

An image shows the logos of four large mobile network companies. (a) Identify and define the market structure. (b) Give three differences between perfect competition and this market.

Try it first, then show the solutionSolution

(a) Oligopoly: a market dominated by a few large sellers whose decisions are interdependent.
(b) Number of sellers: very large versus few.
(b) Entry: free versus difficult.
(b) Advertising: none (identical products) versus heavy.
(b) Price: uniform price, firms are price takers, versus prices set by interdependent firms.

Answer: (a) Oligopoly: a market with a few large sellers who are interdependent. (b) (1) Perfect competition has very many sellers, oligopoly a few. (2) Entry is free in perfect competition but difficult in oligopoly. (3) Perfectly competitive firms sell identical goods without advertising and accept the market price; oligopolists advertise heavily and set prices while watching rivals.

Example 6: Monopoly features · 5 marks · Long answerBoard level

Explain any five features of monopoly.

Try it first, then show the solutionSolution

Single seller.
No close substitutes.
Restricted entry.
Price maker.
Price discrimination possible.

Answer: (1) One seller controls the whole supply. (2) The product has no close substitutes. (3) Barriers prevent new firms from entering. (4) The monopolist sets the price. (5) It can charge different prices to different buyers (price discrimination).

Example 7: Monopolistic competition versus monopoly · 5 marks · Long answerHOTS / competency

A soap company calls itself a 'monopolist' because only it can sell its own brand. Evaluate this claim.

Try it first, then show the solutionSolution

The firm is the only seller of its brand, which gives it a small element of monopoly.
But many other firms sell close substitutes (other soaps).
Entry into the soap market is free.
It has only limited control over price; raising it too much drives buyers to rival brands.
So the market is monopolistic competition, not monopoly.

Answer: The claim is wrong. Although only this firm sells its brand, many firms sell close substitutes, entry is free, and the firm's control over price is limited by rival brands. These are features of monopolistic competition, not monopoly, which requires a single seller with no close substitutes and restricted entry.

Case-study practice (Section B style)

Read the situation, then answer every part. In the board paper this is a 10-mark question split into 2 + 2 + 3 + 3 marks.

A town's markets

Imagine a town where hundreds of farmers sell identical wheat at the mandi at the same price; one state-owned company supplies all the piped water; three large companies make most of the cement sold; and dozens of restaurants compete with different menus and offers.

(i) · 2 marks
Identify the market form for each of the four goods or services.
Answer
Answer: Wheat: (near) perfect competition. Piped water: monopoly. Cement: oligopoly. Restaurants: monopolistic competition.
1 mark for any two correct, 2 for all four.
(ii) · 2 marks
Explain why the wheat farmers cannot charge their own prices.
Answer
Answer: There are hundreds of sellers of identical wheat, and buyers know the price; any farmer charging more would sell nothing, so each accepts the market price (price taker).
1 mark each for two reasons.
(iii) · 3 marks
Give three features of the cement market described.
Answer
Answer: (1) A few large sellers dominate. (2) Firms are interdependent and watch each other's prices. (3) Entry is difficult because of huge capital needs (also price rigidity).
1 mark per feature.
(iv) · 3 marks
How do restaurants try to attract customers, and why can't any one of them raise prices a lot?
Answer
Answer: They differentiate their products through menus, ambience and offers, and advertise. Since many restaurants offer close substitutes and new ones can open freely, a big price rise would send customers elsewhere.
1 mark for differentiation and advertising, 2 for the price limit.

Where the marks are

How a typical answer is split into step marks. Show every step: a right final answer alone rarely earns full marks.

Implication of restricted entry in monopoly. (2 marks) (2 marks)

Step	Marks
Barriers keep rivals out (licences, patents, raw materials).	1
No competition; price maker; long-run abnormal profits.	1

Identify and define oligopoly; three differences from perfect competition. (5 marks) (5 marks)

Step	Marks
Identification.	1
Definition.	1
Difference 1 with meanings.	1
Difference 2 with meanings.	1
Difference 3 with meanings.	1

Where students lose marks in Market

The slips examiners see most often, and what to write instead.

Mistake: Defining market without price and quantity
CISCE examiners' comments, 2024: candidates focused on buyers and sellers but missed the outcome of their interaction, price and quantity exchanged.
Do this: Add 'which determines price and quantity exchanged'.
Usually costs: 1 mark.
Mistake: Confusing monopoly and oligopoly
CISCE examiners' comments, 2024: candidates confused monopoly with oligopoly; in 2024 they were also confused by company names (Maruti, Tata, Hyundai).
Do this: Mono = one; oligo = few. Several big brands = oligopoly.
Usually costs: 1 to 2 marks.
Mistake: Missing 'odd one out' or not reading the key term
CISCE examiners' comments, 2024 and 2025: candidates overlooked 'odd one out' and did not notice the key term in a 'least number of sellers' question.
Do this: Underline the question's instruction word and read every option. In the 2025 'least number of sellers' item, monopoly was not offered; the options were oligopoly, monopolistic competition, monopsony and perfect competition, so the answer was oligopoly (monopsony means a single buyer, not a single seller).
Usually costs: The full mark.
Mistake: General answers and examples instead of differences
CISCE examiners' comments, 2025: candidates gave general answers on restricted entry and wrote only examples in difference questions; some could not identify a market from logos.
Do this: Explain meaning on both sides of each difference.
Usually costs: Up to 3 marks.
Mistake: Not linking a situation to the concept
CISCE examiners' comments, 2024: candidates struggled to connect the electricity-rate statement to price discrimination.
Do this: Same product, different prices to different buyers = price discrimination.
Usually costs: The full mark.

Practice questions on Market

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

Q1 · 1 mark · MCQBoard level
Which market has a horizontal demand curve for the individual firm?
(a) Monopoly
(b) Oligopoly
(c) Perfect competition
(d) Monopolistic competition
Hint
Price taker.
Answer
(c) Perfect competition.
Q2 · 1 mark · MCQBoard level
Toothpaste brands competing through advertisements belong to:
(a) perfect competition
(b) monopoly
(c) monopolistic competition
(d) oligopoly
Hint
Many brands, differentiated.
Answer
(c) monopolistic competition.
Q3 · 2 marks · Very short answerHarder board level
What are selling costs? In which market are they most important?
Hint
Advertising.
Answer
Selling costs are expenses on advertising and sales promotion to increase sales. They are most important in monopolistic competition (and oligopoly), where firms sell differentiated products.
Q4 · 2 marks · Very short answerHOTS / competency
Why does price rigidity exist in oligopoly?
Hint
Fear of reactions.
Answer
Because firms are interdependent: if one cuts its price, rivals cut too, causing a price war; if one raises its price, rivals may not follow and it loses customers. So firms prefer to keep prices stable.
Q5 · 2 marks · Very short answerBoard level
Give two examples each of monopoly and oligopoly in India.
Hint
Railways; cars.
Answer
Monopoly: Indian Railways, a State Electricity Board in its area. Oligopoly: car manufacturers, mobile telecom companies (also soft drinks, airlines).
Q6 · 3 marks · Short answerHarder board level
Distinguish between monopoly and monopolistic competition on three points.
Hint
Sellers, substitutes, entry.
Answer
(1) Monopoly has one seller; monopolistic competition has many. (2) A monopoly product has no close substitutes; under monopolistic competition products are close substitutes. (3) Entry is restricted in monopoly but free in monopolistic competition.
Q7 · 5 marks · Long answerBoard level
Explain any five features of perfect competition.
Hint
Sellers, product, entry, knowledge, price.
Answer
(1) A very large number of buyers and sellers. (2) Homogeneous products. (3) Free entry and exit. (4) Perfect knowledge of the market. (5) A uniform price, with firms as price takers (also perfect mobility, no advertising).
Q8 · 5 marks · Long answerHOTS / competency
'Perfect competition is a theoretical model rather than a real market.' Do you agree? Justify.
Hint
Check each feature against reality.
Answer
Largely yes. Real markets rarely have perfectly identical products, perfect knowledge of prices everywhere, no transport costs and complete mobility of factors. Some farm markets and share markets come close, with many sellers of similar goods and widely known prices, but brands, information gaps and transport costs mean perfect competition is mostly a useful benchmark.

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1.What is a price taker?Show answer
A firm that must accept the market price (perfect competition).
2.Which market has product differentiation?Show answer
Monopolistic competition (also oligopoly).
3.What is price discrimination?Show answer
Charging different prices to different buyers for the same product.
4.Name a feature unique to oligopoly.Show answer
Interdependence among firms.
5.Which market has free entry and identical products?Show answer
Perfect competition.

Best order to study it

Meaning of market.
Perfect competition: features and examples.
Monopoly: features, restricted entry, price discrimination.
Monopolistic competition and oligopoly.
Differences, in tables.

Quick revision checklist

The night before the exam: can you do each of these without looking?

Market = system where buyers and sellers interact to fix price and quantity.
Perfect competition: very many, identical, free entry, price taker.
Monopoly: one seller, no substitutes, restricted entry, price maker, price discrimination.
Monopolistic competition: many, differentiated, free entry, selling costs.
Oligopoly: few, interdependent, barriers, advertising, rigid prices.
Differences: number of sellers, product, entry, price control, advertising.

Market: frequently asked questions

Is a weekly vegetable bazaar a perfectly competitive market?

It comes close, with many sellers of similar produce, but quality differences, bargaining and incomplete information mean it is not perfect competition in the strict sense.

Can a monopolist charge any price it likes?

It can set the price, but buyers will purchase less at higher prices, so it cannot fix both price and quantity. Governments also regulate many monopolies.

What is the difference between product differentiation and product diversification?

Differentiation makes one product look different from close substitutes (a market feature); diversification is a firm adding new products to its range (an entrepreneur's innovation).

Based on: CISCE ICSE 2027 Economics syllabus; CISCE ICSE 2025 Specimen Question Paper and Marking Scheme, Economics (641)