Chapter 08

Building Blocks in Economics: The Problem of Choice — Competency Based Questions

Competency-based questions on Building Blocks in Economics: The Problem of Choice, in the case-study, assertion-reason and application forms the 2026-27 pattern asks in, with answers. Free to read and to save as a PDF.

Class 9CBSE
Social ScienceSubject
Ch 08of 9
2026-27Pattern

Competency based questions

Building Blocks in Economics: The Problem of Choice — Competency20 questions · answers at the end

20 Questions | 70 Marks

1
A village faces a severe water shortage. The village council has to decide whether to use the limited water for irrigating paddy fields (which yields a good income) or for providing drinking water to the residents and for sanitation.(a) Identify the economic problem faced by the village. [1 mark](b) What are the two alternative uses of the scarce resource (water) mentioned? [2 marks](c) Explain the concept of opportunity cost in the context of this decision. 2marks
2
Rohan has ₹500. He wants to buy a new video game which costs ₹450, but he also needs a new pair of socks for school, which costs ₹100. He can only afford one of these.(a) What is the fundamental economic problem that Rohan is facing? [1 mark](b) List the wants Rohan has and identify which is a need. [2 marks](c) If Rohan decides to buy the video game, what is the opportunity cost of his decision? 2marks
3
A farmer in Maharashtra is deciding whether to grow sugarcane or cotton on his land. Sugarcane provides a higher income but requires a lot of water, which is scarce. Cotton is less profitable but requires less water and is also good for the soil in the long run.(a) Which key economic question is the farmer trying to answer? [1 mark](b) Explain the trade-off the farmer faces by referencing the concept of scarcity. [2 marks](c) How does the concept of opportunity cost apply to the farmer's decision? 2marks
4
A government is deciding whether to allocate its budget towards building more highways or investing in improving public healthcare facilities.(a) Identify the economic problem at the heart of this decision. [1 mark](b) State two alternative uses of the government's limited resources. [2 marks](c) Explain how opportunity cost influences the government's decision. 2marks
5
Consider the following scenario: A small artisan unit produces handmade leather bags. They are currently using a labour-intensive method, employing 20 workers. They are considering investing in automated machinery that would reduce the need for manual labour but increase production efficiency.(a) Which key economic question is this scenario primarily addressing? [1 mark](b) What are the two methods of production being considered? [2 marks](c) Discuss one advantage and one disadvantage of shifting to the capital-intensive method for this artisan unit. 2marks
6
Assertion (A): In a market economy, producers primarily decide what to produce based on consumer demand.Reason (R): The forces of demand and supply guide resource allocation in a market economy with minimal government intervention.(a) Both A and R are true and R is the correct explanation of A.(b) Both A and R are true but R is not the correct explanation of A.(c) A is true but R is false.(d) A is false but R is true. 2marks
7
Assertion (A): Human wants are unlimited, which is a primary reason for the existence of scarcity.Reason (R): Scarcity arises when limited resources are used to satisfy unlimited wants.(a) Both A and R are true and R is the correct explanation of A.(b) Both A and R are true but R is not the correct explanation of A.(c) A is true but R is false.(d) A is false but R is true. 2marks
8
A country has significant natural gas reserves but also faces a high demand for electricity. The government must decide whether to use the natural gas to generate electricity or export it for foreign exchange.(a) What is the core economic problem here? [1 mark](b) Identify the two competing uses for the natural gas. [2 marks](c) Explain the concept of opportunity cost in relation to this decision. 2marks
9
A school has a limited budget for extracurricular activities. It can either fund a debate club or a sports team.(a) What economic concept illustrates the choice the school has to make? [1 mark](b) If the school chooses to fund the debate club, what is the opportunity cost? [2 marks](c) Why is making such choices important for efficient resource management? 2marks
10
Mr. Sharma is a shopkeeper who sells essential groceries. He observes that the demand for rice and pulses has increased significantly in his neighbourhood, while the demand for luxury items like imported chocolates has remained stable.(a) Which key economic question is Mr. Sharma addressing with this observation? [1 mark](b) How does his observation help him in deciding "how to produce" or "for whom to produce"? [2 marks](c) What economic principle guides his decision to stock more of rice and pulses? 2marks
11
A newly elected government promises to provide free laptops to all college students and also to build a new super specialty hospital. The country's budget is limited.(a) Identify the economic problem faced by the government. [1 mark](b) Explain the concept of 'trade-off' in this context. [2 marks](c) If the government chooses to build the hospital, what is the opportunity cost? 2marks
12
Read the passage below and answer the questions that follow:"The Indian economy is a mixed economy. It combines features of both market and planned economies. Private ownership of property and businesses exists alongside state-owned enterprises. While market forces of demand and supply play a significant role in determining prices and production, the government also intervenes through regulations, subsidies, and public welfare programmes."(a) According to the passage, what are the two main economic systems that are combined in India? [2 marks](b) How does the passage describe the role of private entities and the government in India's economic system? [2 marks](c) What is the main advantage of a mixed economy as suggested by the passage? 1mark
13
The government is considering a policy to subsidize electric vehicles (EVs) to encourage their adoption and reduce pollution. However, this would mean reducing spending on road infrastructure.(a) What fundamental economic problem is highlighted by this policy decision? [1 mark](b) Explain the opportunity cost of subsidizing electric vehicles. [2 marks](c) How does this situation relate to the key economic question of 'what to produce'? 2marks
14
A student has to decide whether to spend their evening studying for an upcoming exam or attending a friend's birthday party.(a) Identify the economic concept that describes the student's dilemma. [1 mark](b) If the student chooses to attend the party, what is the opportunity cost? [2 marks](c) Why is it important for students to understand and apply this concept? 2marks
15
A company that manufactures mobile phones is deciding whether to set up a new factory in India or Vietnam. The decision depends on factors like labour costs, availability of skilled workers, government incentives, and proximity to markets.(a) Which key economic question is this company addressing? [1 mark](b) How do 'factors of production' influence the company's decision? [2 marks](c) Explain how the concept of 'opportunity cost' might apply if they choose one location over the other. 2marks
16
Assertion (A): In a planned economy, individual freedom in economic choices is significantly restricted.Reason (R): All major economic decisions regarding production and distribution are made by a central planning authority.(a) Both A and R are true and R is the correct explanation of A.(b) Both A and R are true but R is not the correct explanation of A.(c) A is true but R is false.(d) A is false but R is true. 2marks
17
A nation has limited fertile land. It must decide whether to grow food crops to feed its population or cash crops like coffee and tea for export revenue.(a) What is the basic economic problem illustrated here? [1 mark](b) What are the two alternative uses of the scarce resource (fertile land)? [2 marks](c) Explain the 'trade-off' involved in this decision. 2marks
18
Read the given statement: "The use of steel can be for manufacturing medical equipment, refrigerators, or aircraft."(a) What economic principle does this statement illustrate? [1 mark](b) If steel is used for manufacturing aircraft, what is the opportunity cost in terms of the other uses? [2 marks](c) How does this concept of alternative uses relate to the core problem of economics? 2marks
19
A government is deciding whether to invest more in education or in defence.(a) Identify the economic problem. [1 mark](b) Explain the concept of opportunity cost in this context. [2 marks](c) Why is understanding the 'for whom to produce' question important for the government in this scenario? 2marks
20
A company is deciding between using 50 skilled labourers or investing in a sophisticated machine that can do the work of 40 labourers. Labour is currently inexpensive in the region, but the government is offering tax incentives for adopting new technology.(a) Which key economic question is the company addressing? [1 mark](b) What factors must the company consider to make its decision? [2 marks](c) How might the government's incentive influence the company's choice between labour and capital? 2marks

Answers

1.(a) The economic problem faced by the village is scarcity of water. [1 mark](b) The two alternative uses are: irrigating paddy fields for income, and providing drinking water and sanitation for residents. [2 marks](c) The opportunity cost of irrigating paddy fields is the forgone benefit of having sufficient drinking water and adequate sanitation for the residents. Conversely, the opportunity cost of providing drinking water is the forgone income from paddy cultivation. 2marks

2.
(a) The fundamental economic problem is scarcity of money (limited resources) and unlimited wants. [1 mark]
(b) Wants: Video game, new pair of socks. Need: New pair of socks for school. [2 marks]
(c) If Rohan buys the video game, the opportunity cost is the new pair of socks he cannot buy, which are needed for school. [2 marks]

3.
(a) The farmer is trying to answer the key economic question: 'What to produce?'. [1 mark]
(b) The farmer faces a trade-off due to scarcity of water. Producing sugarcane will lead to a higher income but deplete water resources, potentially impacting future yields or other crops. Producing cotton saves water but yields lower income. [2 marks]
(c) The opportunity cost of growing sugarcane is the forgone income from cotton and the benefit of conserving water for the soil's long-term health. The opportunity cost of growing cotton is the higher immediate income that could have been earned from sugarcane. [2 marks]

4.
(a) The core economic problem is the scarcity of government funds and the need to make choices among competing uses. [1 mark]
(b) Two alternative uses of limited government funds are: building more highways and improving public healthcare facilities. [2 marks]
(c) If the government chooses to build highways, the opportunity cost is the improvement in public healthcare facilities (and the benefits they would bring, like better health outcomes). If they choose healthcare, the opportunity cost is the benefits of improved highways (like better transport, reduced travel time). [2 marks]

5.
(a) The scenario primarily addresses the key economic question: 'How to produce?'. [1 mark]
(b) The two methods of production being considered are: labour-intensive (using more workers) and capital-intensive (using automated machinery). [2 marks]
(c) Advantage of shifting to capital-intensive: Increased production efficiency, potentially higher quality, and ability to scale up production. Disadvantage: High initial investment cost, potential job losses for current workers, and dependence on technology which might require specialized maintenance. [2 marks]

6
(a) Both A and R are true and R is the correct explanation of A. 2marks
7
(a) Both A and R are true and R is the correct explanation of A. 2marks

8.
(a) The basic economic problem is scarcity of natural gas and the need to choose between competing uses. [1 mark]
(b) The two competing uses are: generating electricity for domestic use, and exporting for foreign exchange. [2 marks]
(c) The opportunity cost of using natural gas to generate electricity is the forgone foreign exchange earnings from exports. Conversely, the opportunity cost of exporting the gas is the forgone benefit of cheaper domestic electricity generation. [2 marks]

9.
(a) The economic concept that illustrates the choice the school has to make is scarcity and the resulting need for choice, leading to opportunity cost. [1 mark]
(b) If the school chooses to fund the debate club, the opportunity cost is the benefits that the sports team would have provided (e.g., physical fitness for students, development of teamwork skills, representation in competitions). [2 marks]
(c) Making such choices is important for efficient resource management because the budget is limited, and allocating funds to one activity means those funds cannot be used for another. This ensures that the chosen activity provides the maximum possible benefit for the resources invested. [2 marks]

10.
(a) Mr. Sharma is addressing the key economic question: 'What to produce?' (or rather, what to stock). [1 mark]
(b) His observation helps him decide "what to produce" by indicating consumer preferences and demand. This directly influences "for whom to produce" by guiding him to serve the customer segments willing to buy essential groceries over luxury items, thereby ensuring his business meets market needs efficiently. [2 marks]
(c) The economic principle guiding his decision is the efficient allocation of his limited resources (shop space, capital) to meet the demand of his customers, thereby maximising potential sales and profit. [2 marks]

11.
(a) The economic problem faced by the government is scarcity of funds and the need to make choices between two desirable but costly projects. [1 mark]
(b) A trade-off occurs because the government cannot fund both projects fully with its limited budget. Choosing one project means sacrificing or reducing the scope of the other. [2 marks]
(c) If the government chooses to build the hospital, the opportunity cost is the benefit of providing free laptops to all college students (e.g., improved digital literacy, better educational opportunities). [2 marks]

12.
(a) The two main economic systems combined in India are the market economy and the planned economy. [2 marks]
(b) The passage states that private ownership of property and businesses exists, and market forces play a significant role. Simultaneously, the government intervenes through regulations, subsidies, and public welfare programmes, and state-owned enterprises also exist. [2 marks]
(c) The main advantage suggested by the passage is that a mixed economy combines the benefits of private initiative and market efficiency with government intervention for regulation and welfare, allowing for flexibility and adaptation to diverse needs. [1 mark]

13.
(a) The fundamental economic problem highlighted is scarcity of government funds and the need for a trade-off between different public goods or services. [1 mark]
(b) The opportunity cost of subsidizing electric vehicles is the forgone benefits of improved road infrastructure, such as potentially faster travel times, reduced congestion, and better connectivity, which could also impact economic activity. [2 marks]
(c) This situation relates to 'what to produce' by forcing a decision on resource allocation – should resources be directed towards producing and promoting 'green' transportation (EVs) or towards developing and maintaining traditional transportation infrastructure (roads). [2 marks]

14.
(a) The economic concept that describes the student's dilemma is scarcity of time and the resulting need to make a choice, which involves an opportunity cost. [1 mark]
(b) If the student chooses to attend the party, the opportunity cost is the benefit of studying for the exam, which could include better understanding of the subject, higher grades, and reduced stress during the exam. [2 marks]
(c) It is important for students to understand and apply this concept to manage their limited time effectively, prioritize tasks, and make informed decisions that align with their goals, recognizing that every choice has a consequence (what is given up). [2 marks]

15.
(a) This company is addressing the key economic question: 'How to produce?' (specifically, where to produce). [1 mark]
(b) Factors of production like labour (cost and availability of skilled workers) and capital (access to technology, government incentives which relate to capital investment) directly influence the company's decision on the best location for its factory. [2 marks]
(c) If they choose India, the opportunity cost might be the potential cost savings or market access they could have gained in Vietnam. If they choose Vietnam, the opportunity cost could be the benefits of the Indian market, government incentives in India, or potentially lower logistics costs if their primary market is India. [2 marks]

16
(a) Both A and R are true and R is the correct explanation of A. 2marks

17.
(a) The basic economic problem illustrated here is scarcity of fertile land and the need to make a choice between two alternative uses. [1 mark]
(b) The two alternative uses of fertile land are: growing food crops for domestic consumption, and growing cash crops like coffee and tea for export revenue. [2 marks]
(c) The 'trade-off' involved is that prioritizing food crops ensures food security but might limit foreign exchange earnings. Prioritizing cash crops can boost exports but may lead to food shortages or reliance on imports. [2 marks]

18.
(a) This statement illustrates the concept of alternative uses of a resource, specifically steel, which is a scarce resource. [1 mark]
(b) If steel is used for manufacturing aircraft, the opportunity cost is the forgone production of medical equipment and refrigerators. [2 marks]
(c) This concept relates to the core problem of economics because economics deals with how to allocate limited resources among competing and alternative uses to satisfy unlimited wants. Recognizing alternative uses highlights the trade-offs involved in every decision. [2 marks]

19.
(a) The economic problem is the scarcity of government funds and the need to choose between two essential public services: education and defence. [1 mark]
(b) The opportunity cost of investing more in education is the potential benefits that increased defence spending could provide (e.g., national security). Conversely, the opportunity cost of investing more in defence is the forgone benefits of enhanced education (e.g., a more skilled workforce, improved human capital). [2 marks]
(c) Understanding the 'for whom to produce' question is important because the government must consider which group of citizens benefits most from either investment. For example, defence spending protects all citizens, while education primarily benefits students and future generations but indirectly benefits society through a skilled workforce. The decision must balance broad security with specific developmental needs. [2 marks]

20.
(a) The company is addressing the key economic question: 'How to produce?'. [1 mark]
(b) The company must consider: the cost-effectiveness of labour versus machinery, the efficiency and output quality of each method, the long-term implications of investment in technology versus employment, the availability and cost of skilled labour, and the impact of government incentives. [2 marks]
(c) The government's incentive to adopt new technology (tax benefits) makes the capital-intensive option (the sophisticated machine) relatively cheaper and more attractive compared to labour, potentially influencing the company to choose machinery over a larger workforce, despite labour being currently inexpensive. [2 marks]

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