NCERT Class 9 Social Science Understanding Society India and Beyond PART-I: Chapter 8 — <b>Building Blocks in Economics:</b>
This chapter, "Building Blocks in Economics: The Problem of Choice," from NCERT's Class 9 Social Science textbook 'Understanding Society India and Beyond PART-I,' introduces fundamental economic concepts. It begins by posing big questions about what economics deals with, the key questions it addresses, and how different economic systems tackle them. The chapter highlights that economics is concerned with making choices due to unlimited human wants and limited resources. It defines market, needs, and wants, and explores the concept of resources, including factors of production like land, labour, capital, and technology. The text emphasizes that both natural and human-made resources are scarce and have alternative uses. A crucial concept introduced is opportunity cost, which is the value of the next best alternative foregone when a choice is made. The chapter uses examples like pocket money choices, library book allocation, and a farmer's crop selection to illustrate these economic principles, explaining how these choices impact individuals, enterprises, and governments in meeting unlimited wants and improving quality of life.
Quick info
| Board | CBSE / NCERT |
|---|---|
| Class | Class 9 |
| Subject | Social Science |
| Book | Understanding Society India and Beyond PART-I |
| Chapter | Chapter 8 — <b>Building Blocks in Economics:</b> |
| Language | English |
| PDF type | NCERT Textbook |
| Session | CBSE 2026 |
| Reading time | 3 minutes |
| Word count | 522 |
Learning outcomes
- Understand the core concerns of economics related to choice and scarcity.
- Differentiate between human needs and wants.
- Identify resources and their role in satisfying wants.
- Explain the concept of opportunity cost with examples.
- Recognize how individuals, enterprises, and governments make economic choices.
Vocabulary
| Word | Meaning |
|---|---|
| Economics | The study of how societies allocate scarce resources to satisfy unlimited wants. |
| Market | A place where buying and selling of products and services takes place, physical or virtual. |
| Needs | Essentials for survival such as food, water, and shelter. |
| Wants | Desires that go beyond basic needs, such as gadgets or vacations. |
| Resources | Factors used for the production of goods and services (natural or human-made). |
| Factors of production | Land, labour, capital, and technology used for producing goods and services. |
| Scarcity | The condition of having limited resources to meet unlimited wants. |
| Opportunity cost | The value of the next best alternative that is given up when a choice is made. |
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Practice questions
- What is the main problem that economics deals with? Answer: The main problem economics deals with is making choices due to unlimited human wants and limited resources.
- Give two examples of human needs. Answer: Two examples of human needs are food and shelter.
- What are the four factors of production mentioned in the chapter? Answer: The four factors of production mentioned are land, labour, capital, and technology.
- Define opportunity cost. Answer: Opportunity cost is the value of the next best alternative that is given up when a choice is made.
- Can a market be virtual? Explain. Answer: Yes, a market can be virtual, such as an online marketplace on the internet where buying and selling occur.
Frequently asked questions
What is the fundamental problem addressed by economics?
Economics addresses the fundamental problem of scarcity, where limited resources must be allocated to satisfy unlimited human wants.
What is the difference between needs and wants?
Needs are essential for survival (like food, water), while wants are desires beyond basic necessities (like gadgets, vacations).
What are resources in economics?
Resources are the inputs used to produce goods and services, including natural resources (land, water) and human-made resources (capital, technology).
How are resources limited?
Both natural and human-made resources are limited in quantity, meaning there isn't enough to satisfy everyone's unlimited wants.
What does 'opportunity cost' mean?
Opportunity cost is the value of the best alternative that you give up when you make a choice.
Who makes economic choices?
Individuals, enterprises, and governments all have to make economic choices regarding the allocation of scarce resources.
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Topics covered
NCERT Class 9 Social Science — Understanding Society India and Beyond PART-I — Chapter 8 — <b>Building Blocks in Economics:</b>. Verified by NCERT Help Editorial Team. Reviewed on 29 Jul 2026. Last updated 10 Aug 2026.